Pollen morphology of 8 genera of Chinese Umbelliferae (Apiaceae)

Sheh Meng-Lan, Su Pu, Shan Ren-Hwa

Received:1900-01-01 Revised:1900-01-01 Online:1982-02-18 Published:1982-02-18
Contact: Sheh Meng-Lan

Abstract:

This paper deals with the studies of pollen morphology of 8 genera including 22

species and 1 variety of Umbelliferae (Apiaceae). They have been investigated under

both the light microscope and the SEM. These genera can be distinguished by their

pollen characters. The observed data listing in the following table reveal that they

can be distinguished according to shape of pollen, form of pores, sculpture of exine

and size of grains etc.

1. Shape of pollen grains

(1) subrhomboidal type: Chuanminshen Sheh et Shan, Changium Wolff,

Cyclorhiza Sheh et Shan

(2) oval type: Seseli L.

(3) subrectangular type

a. thickened at the equator and rugulose: Peuecdanum L.

b. constricted at the equator and rugulose: Ligusticum L.

e. constricted at the equator and rugulose, thickened at both polar zones:

Vicatia DC.

(4) equatorially-constricted type, rugulose at the equator, thickened at both

polar zones: Ferula L.

2. Form of aperture

(1) rectangular protrude type: Chuanminshen Sheh et Shan, Ferula L.,

Changium Wolff

(2) circular type: Ligusticum L.

(3) elliptic type: Peucedanum L., Vicatia DC., Seseli L.

3. Sculpture of exine

(1) reticulate: Chuanminshen Sheh et Shah

(2) pitted-reticulate: Changium Wolff

(3) striate-reticulate: Ferula L., Peucedanum L., Ligusticum L., Seseli L.,

Vicatia DC.

(4) cerebro-reticulate: Cyclorhiza Sheh et Shan

Basing upon the above pollen characters, the genera Cyclorhiza Sheh et Shah and

Chuanminshen Sheh et Shan are briefly discussed. They are two clearly delimitated

natural genera.

Sheh Meng-Lan, Su Pu, Shan Ren-Hwa. Pollen morphology of 8 genera of Chinese Umbelliferae (Apiaceae)[J]. .

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