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1992, Vol.30, No.2 Previous Issue    Next Issue
Seed Morphology of Plantago in China and Its Taxonomic Significance
Liu Jun-Zhe, Zhang Qing-Min, Guo Shu-Hua, Zhou Xing-Di
1992, 30 (2): 118-125. 
Abstract ( 0 )
Studied in this work was seed morphology of the genus Plantago (2 subgenera, 8
sections, 17 species and 1 variety )in China. The sculpture was observed under scanning elec-
tion microscope. Four forms of seed morphology are recognized as follows: (1)Multi-angu-
lar type: seeds are variously angulate, yellow-brown or black, 6-30 in a fruit; seed-coat
sculpture ranges from reticulate to papillate. It occurs in Subgen. Plantago Sect. Polyneuron:
P. scheideri, P. denstflorus, P. major, P. hostifolia, P. asiatica, P. erosa and P. centralis. (2)
Navicular type: seeds are navicular, yellow, brown to black, 2 in a fruit; seed-coat sculpture
is reticulate. It was found in Subgen. Plantago Sect. Novorbis: P. virginica; Sect.
Arnoglossum: P. lanceolata; Sect. Leucopsyllium: P. minuta, P. lessingii and P. aristata and
Subgen.  Psyllium Sect. Psyllium: P.  indica. (3)Ovoid type: seeds are long-ovoid,
yellow-brown, black and lustrous. Seed-coat sculpture scali-ratiform. P. maxima in Subgen.
Plantago Sect. Lamprosantha belongs to this type. (4)Recti-circular type: seeds are recti-cir-
cular, yellow-brown, black, 1-2 or 4-5 in a fruit; seed-coat sculpture is reticulate and
papillate. It was found in P. maritima var. salsa of Subgen. Plantago Sect. Coronopus and P.
depressa, P. camtschatica and P. arachnoidea of Sect. Mesembrynia. The seed morphology
and seed-coat sculture exhibit specific characters, by which some of confused species can be
clarified and a new species, P. densiflorus J. Z. Liu. is established.
     The present author’s seed morphology classification is in accordance with Pilger’s system
of the genus, which was established using other features.
Pollen Morphology of Hydrocotyloideae and Saniculoideae (Apiaceae) in China
Sheh Meng-Lan, Su Pu
1992, 30 (2): 126-136. 
Abstract ( 0 )
Pollen grains of 30 species and 2 varieties from China, belonging to 5 genera (out
of 36 species in 5 genera) of Hydrocotyloideae and Saniculoideae, were examined with light
microscope and scanning electron microscope. 1.Six types of the pollen shape are recognized
in Hydrocotyloideae and Saniculoideae from China, and their evolutionary trend is from
rhomboidal→subspheroidal→ellipsoidal→subrectangular→superrectangular to equatorial-
ly-constricted. 2.Pollen grains of Hydrocotyloideae are mostly ellipsoidal with P / E ratio
1.07-1.6, the polar axis 22.5-46μm long, the equatorial axis 13.75-27.5μm long, and with
the size index 21.1-31.8.They are angulapeturate in the great majority, and the exine sculp-
ture is recticulate under SEM. Those of Saniculoideae are mostly superrectangular or rectan-
gular, with P/E ratio 1.3-2.1, the polar axis 35-65μm long, the equatorial axis 17.5-
42.5μm long, and with the size index 28.2-49.7. They are planaperturate in the great majori-
ty and the exine sculpture is striate-reticulate or cerebro-reticulate under SEM. Therefore,
the latter might be more advanced than the former. 3.Pollen grains of Dickinsia Franch., en-
demic to China, are ellipsoidal,with P/E ratio 1.5,the polar axis 31.25-37.5μm long, the
equatorial axis 20-25μm, and with the size index 27.81. They are angulaperturate, and the
exine sculpture is cerebroid-reticulate under SEM. The genus is greatly similar to the mem-
bers of Hydrocotyloideae in pollen morphology, which supports the treatment of the genus as
a member of Hydrocotyloideae by Handel-Mazzetti (1933).
Palaeopalynological Evidence of Phylogeny in Hamamelidaceae
Wang Xian-Zeng
1992, 30 (2): 137-145. 
Abstract ( 0 )
This paper deals with evolution, classification and pollen morphology of the
Hamamelidaceae, an important family in phylogeny of angiosperms.
     I. Pollen morphology and systematics of modern Hamamelidaceae.
     The pollen morphology of the family may be divided into the following four types: (1)
 Tricolpate: Hamamelis, Loropetalum, Mytilaria, Corylopsis, Sysopsis, and Distylum etc.;
(2) Tricolpate with operculum: Disanthus; (3) Tricolporate: Rhodoleia; (4) Pantoporate:
Liquidambar.
     The tricolpate pollen of the Hamamelidaceae is a primitive type in angiosperms, but the
most ancient type is monocolpate pollen. Therefore, the family might have evolved from the
Magnoliaceae of the monocolpate pollen. The pantoporate pollen is an evolutionary type in
the family. It might have evolved from the tricolpate pollen.
      II.The fossil pollen of the Hamamelidaceae
      1 .General introduction of the fossil pollen of the family Hamamelidaceae
      The most’ancient fossil pollen belonging to the family was found in the middle-late Ear-
ly Cretaceous. Palynologists call the fossil pollen of the Hamamelidaceae Retitricolpites,
which consists of three genera: Hamamelis L.,Corylopsis Sieb. et Zucc and Fothergilla
Murr. Liquidambar is of an advanced type in the fossil pollen of the Hamamelidaceae. It
was found in the period from the Palaeogene to the Neogene in China.
      2. The geological history of the Hamamelidaceae may be divided into the following four
stages:
      (A) The Early Cretaceous stage or origination stage. The family may be evolved from
Magnoliales in the middle-late Early Cretaceous. (B)the Late Cretaceous stage or forma-
tion stage. The family is much developed in the period. (C) The Tertiary stage or develop-
ment stage. The family was a much developed one among angiosperms. (D)The Neogene to
modern stage or perfection stage. The evolutionary type, the Liquidambar type of the
Hamamelidaceae, was much developed in the Neogene.
     III. The palaeopalynological evidence of evolution of the Hamamelidaceae
     The earliest fossil pollen of angiosperms was found in the Barremian (Early Cretaceous)
in England, Israel, the United States of America etc., and was named as Clavatipollenites by
Couper (1953). In recent years, Clavatipollenites was also found in the middle-late Early
Cretaceous in Nei Monggol and Jiangxi Province of China. We also found Retitricolpites in
the middle-late Early Cretaceous in Nei Monggol and Jiangxi Province. Retitricolpites, be-
longing to the Hamamelidaceae, is a primitive type among angiosperms, but it is younger
than Clavatipollenites. Therefore, the pollen of Hamamelidaceae may have evoloved from
Clavatipollenites, which may have evoloved in turn from that of Magnoliales.
A Revision of Lobelia Subgen. Tupa (Campanulaceae) in China
Hong De-Yuan, Zhang Tie-Jun
1992, 30 (2): 146-162. 
Abstract ( 0 )
Based on specimens as many as available, a quantitative analysis of character varia-
bility and correlation in Lobelia Subgen. Tupa was carried out with the results shown by
pictorialized scatter diagram and histogram. Pollen grains and seed coat were examined un-
der SEM. The classitication of the subgenus in China is revised. Twelve specipes are recog-
nized; a new species, L. foliiformis, and a new subspecies, L. colorata subsp. guizhouensis,
are described; L. taliensis is reduced to a subspecies or L. colorata, which consists of three
subspecies; L. kwangsiensis is treated as a variety of L. davidii in accordance with the treat-
ment made by Lian Yong-shan in Fl. Reip. Pop. Sin.73 (2)
A Study on the Genus Melocalamus Benth. (Bambusoideae) from China
Hui Chao-Mao, Hsueh Chi-Ju
1992, 30 (2): 163-168. 
Abstract ( 0 )
Melocalamus Benth. consists of five species. Through a comprehensive study of
history, morphology, and all specimens available, the authors confirm the occurrence in
China of M. compactiflorus (Kurz.) Benth. et Hook f., the type of the genus, and two species,
M. scandens Hsueh ct Hui, M. fimbriatus Hsueh et Hui, are described as new. A key to species
is provided.
New Taxa of Gramineae from China
Wu Zhen-Lan
1992, 30 (2): 169-174. 
Abstract ( 0 )
Six new taxa of the Gramineae are described from the China. They are Melica
L.Sect. Schizolemma Z.L.Wu, M .flava Z.L.Wu, M. longiligulata Z.L.Wu, M.yajiangensis Z. L.
Wu, Glyceria chinensis Keng, Oryzopsis munroi Stapf ex Hook.f. var.parviflora Z.L.Wu.
Two New Species of Gaultheria from Sichuan
Hsu Ting-Zhi
1992, 30 (2): 175-178. 
Abstract ( 0 )
Gaultheria lasiocarpa T. Z. Hsu and G. miyienensis T. Z. Hsu (Ericaceae) are des-
cribed as new from Sichuan Province, China.
A New Species and a Newly Recorded Species of Adoxa L. from Xizang
Yao Gan
1992, 30 (2): 179-180. 
Abstract ( 0 )
A new species and a new record for China of the genus Adoxa L.are reported from Xizang, China. They are Adoxa xizangensis G.Yao and Adoxa inodora (Falc.ex C.B.Clarke)  Nepomn.
A New Species of Iris from China
Zhao Yu-Tang
1992, 30 (2): 181-182. 
Abstract ( 0 )
One new species of the genus Iris(Iridaceae), Iris Psammocola Y.T.Zhao, is des-
cribed from Ningxia Autonomoeus Region, China.
Recent Advances in Bryological Research
Wu Pan-Cheng
1992, 30 (2): 183-192. 
Abstract ( 0 )
In the last two decades, all the branch fields of bryology, with classical taxonomy
gradually developing into multidisciplinecourses, have witnessed a great progress.
     The author is attempting to give a brief view of bryology in the following five
paragraphs.
     The first part introduces the fundamental characteristics of bryology in the recent dec-
ades. Publication of “New Manual of Bryology” Vol. I and II, edited by Schuster( 1983-
1984) , marked a new epoch of bryology. A series of books, “The Biology of Mosses”
(Richardson, 1981), the “New Advances in Bryology “and the other bryological publications
showed that bryologists were working not only on bryofloras in different regions of the
world, but also deeply engaged in the micro-view fields of bryology. Evidently, the world
bryological researches have entered a prosperous period.
     The second part gives some recent examples of investigations on taxonomy,
morphology, cytology, paleobotany, ecology, reproductive biology and ecological physiology
of bryophytes.
     In discussing the tendency of the future research, the author emphasizes that systematic
and evolutionary botany of bryophytes is one of the main subjects .Following the increase of
taxa, the development of chemotaxonomy, cytology, numerical taxonomy etc.will reveal the
relationships between orders, families or infrafamiliar groups. However, the main problem in
this respect is lacking of key fossil records of bryophytes. On the other hand, the monographs
increase steadily, and they are helpful in correcting some previously reported disjunct distri-
bution of species and distribution of regional new species. Plant geography of bryophytes can
also be used for explaining the continental drift (Schuster 1969, 1972).Moss indicators, which
are more sensitive than vascular plants, have been noticed. The traditional utilization of
mosses will be continuous.
     Chinese bryology has been greatly improved in the past half a century, and about a hun-
dred papers involving taxonomy, phytogeography, phytocoenology, morphology, cytology,
numerical taxonomy and applied bryology, were published in last two decades. In China, the
foundation of taxonomy of bryophytes is developing, although we already have several
bryological research centers. It seems to me that too many new taxa have been described,
while no sufficient attention has been paid on studies on relationships and evolution of
bryophytes. Due to identification of bryophytes, hryofloras between some neighbouring re-
gions are not comparable. Fossils of bryophytes are usually treated as the “unknown kind of
plants”, so we lack the geological evidence of bryophytes. We are facing the problem in train-
ing a new generation of bryologists due to the limited funds.
     Finally, some suggestions are made for Chinese bryology. The ways for seeking the origin
of bryophytes will be: l.Searching for primitive groups of bryophytes.2.Comprehensive stud-
ies on key genera and species.3.Expeditions to the unknown native localities of special groups
of bryophytes. Further studies on the bryoflora and phytogeography are necessary in
China. Studies on the distribution centers of genera endemic to China and East Asiatic endem-
ic genera in China will provide some pieces of evidence on the origin oe the Chinese
bryoflora. New records of macrofossils and microfossils of bryophytes will help to break the
“neck of bottle “ of the above-mentioned problems. Experimental projects are almost
unknown in China. lt is very important, therefore, to encourage people to work on them for
original data on phylogeny and origin of bryophytes, although it will be a long-term task in
China.