中国黑三稜属的研究

陈耀东

Chen Yao-Dong

Received:1900-01-01 Revised:1900-01-01 Online:1981-02-18 Published:1981-02-18
Contact: Chen Yao-Dong

Abstract:

Sparganium is a genus of about 18 species, largely distributed in temperate and cool

regions of the northern hemisphere, with a couple of species extending to tropical Asia,

Australia and New Zealand. In China, four species have hitherto been reported. To

them another six species, including three new ones, are added in the present paper,

based on our recent collections. They may be divided into four sections:

I. Sect. Sparganium

1. S. stolon ferum (Graebn.) Buch-Ham. 2. S. stenophyllum Maxim. ex Meinsh.

3. S. limosum Y. D. Chen, sp. nov.

II. Sect. Natantia Aschers. et Graebn.

4. S. fallax Graebn. 5. S. simplex Huds. 6. S. glomeratum Least ex Beurl.

III. Sect. Conferta Y. D. Chen, sect. nov.

7. S. confertum Y. D. Chen, sp. nov.

IV. Sect. Minima Aschers, et Graebn.

8. S. yunnanense Y. D. Chen, sp. nov. 9. S. angustifolium Michx. 10. S. minimum

Wallr.

It is interesting to note that S. confertum is of great phylogenetic importance, be-

cause, apart from its habit, it has certain characters, such as spike-like inflorescence,

pellucid and membranous scales with lobed margines, stalked ovary and sterile female

flowers on pistillate heads, which suggest those in Typha, especially in T. orientalis

Presl. Apparently, the discovery of this intensely interesting species, which forms a

connecting link between Sparganium and Typha, makes it unacceptable that they are treated as two separate families.

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