毛茛科一新属——人字果属

中国科学院大学学报

毛茛科一新属——人字果属

肖培根, 王文采

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1964-10-18 发布日期:1964-10-18
通讯作者: 肖培根

A New Genus of Ranunculaceae—Dichocarpum W. T. Wang et Hsiao

Hsiao Pei-Ken, Wang Wen-Tsai

Received:1900-01-01 Revised:1900-01-01 Online:1964-10-18 Published:1964-10-18
Contact: Hsiao Pei-Ken

摘要/Abstract

Abstract:

The genus Isopyrum was established by Linné in 1742. In Species Plantarum ed.

I: 557 (1753) he discriminated three species under this genus, i.e., Isopyrum fumarioides,

I. thalictroides and I. aquilegioides. The first was, however, separated by Reichenbach

as a monotypic genus-Leptopyrum in 1828, and according to Drummond & Hutchinson

the third species I. aquilegioides proved to be Aquilegia viscosa Gouan. Thus, the only

remaining species, I. thalictroides Linn. naturally constitutes the type of the genus Iso-

pyrum.

Since then, many new species had been discovered, some of which were later se-

parated as distinct genera by different authors. In 1920 Drummond & Hutchinson

published an elaborated revision of the genus Isopyrum, where, when recognizing Lepto-

pyrum, Souliea, Semiaquilegia as distinct genera, and also restoring the validity of

Enemion, they furthermore proposed two new genera: Asteropyrum and Paraquilegia.

In addition to the seven genera above mentioned, Ulbrich further established a new

genus Paropyrum in 1925, and another new genus Urophysa in 1929, basing on Iso-

pyrum anemonoides Kar. et Kir. (=Paraquiligia uniflora [Aitch.] Drumm. et Hutch.)

and I. henryi Oliv. (=Semiaquilegia henryi [Oliv.] Drumm. et Hutch.) respectively.

Our present study has shown that Asteropyrum, Paraquilegia, Leptopyrum, Semia-

quilegia, Souliea, Enemion, Usophysa are all remarkably distinct genera. As for genus

Urophysa, it reveals a very close affinity to Aquilegia in having stamanoides inside the

fertile stamens, the long-styled carpels and the similar nectariferous petals; but the

more simply divided leaves and the less conspicuous nectariferous organs seem to show

that the genus is more primitive than Aquilegia.

After a careful examination of the species of genus Isopyrum Linn. s.1. and of its

near allies, we find that I. thalictroides Linn., I. anemonoides Kar. et Kit. (=Paropyrum

anemonoides [Kar. et Kir.] Ulbr.) and I. manshuricum Kom. (=Semiaquilegia manshurica

Kom. and I. manshuricum Kom.) are homogenous both in habit and floral structure,

thus forming a very natural group. The genus Isopyrum Linn. itself, while remaining

sixteen species, however, form another natural group, which is easily distinguished from

Isopyrum by a series of important characteristics, for which we propose a new genus,

Dichocarpum. On account of the foregoing reasons, it is suggested that Paropyrum

Ulbr. will not uphold as a separate genus, and we also feel necessary to amend the cir-

cumscription of Isopyrum as construed by Drummond and Hutchinson.

肖培根, 王文采. 毛茛科一新属——人字果属[J]. 中国科学院大学学报.

Hsiao Pei-Ken, Wang Wen-Tsai. A New Genus of Ranunculaceae—Dichocarpum W. T. Wang et Hsiao[J]. .