作 者 ：Zhang Li-bing, Kung Hsian-shiu
期 刊 ：植物分类学报 1995年 5期
Keywords:Sect. Metapolystichum,
Abstract:
The paper deals with the taxonomic problem of the fern section, Polystichum
Roth Sect. Metapolystichum Tagawa. The concept of Sect. Metapolystichum employed
here roughly follows that of Daigobo (1972) with some modifications, i. e. "leaves bipin-
nate, herbaceous; pinnules more or less petioled, with narrow-type microscales; raches
without gemmae". A new system of the section comprising 5 series is proposed, a key to the
series is as follows:
1. Pinnules without hydathodes.
2. Stipes with ovate, ovato-lanceolate or broadly lanceolate scales.
3. Pinnules with auricles.
4. Microseales longer than 1.5 mm, dense; scales of stipes bicolorous or concolorous
............................................................ Set. 4. Brauniana
4. Microscales usually shorter than 1.0 mm, sparse; scales of stipes bicolorous
.............................................................. Ser. 5. Makinoiana
3. Pinnules without auricles ..................................... Set. 3. Exauricula
2. Stipes only with linear or lanceolato-linear scales .............. Set. 2. Linearia
1. Pinnules with hydathodes ............................................ Ser. 1. Punctifera
In this paper, microscales of Polystichum are considered of significance in taxonomy of
this genus and can be divided into two types: the Long-type (longer than 1.5 mm) and the
Short-type (shorter than 1.0 mm).
The paper recognizes 22 species of Sect. Metapolystichum in China, of which one
species, P. longipinnulum Naif is new to China, P. glingense Ching et Y. X. Ling and P.
shennongense Ching, Boofford et Shing are treated as synonyms of P. punctiferum C. Chr.
and P. braunii (Spenn.) Fee respectively. P. mucronifolium (BI.) Presl and P. setiferum
(Forsk.) Moore ex Woynar are considered not distributed in China (even in the
Himalayas). As to the lectotype of P. yunnanense Christ, Henry 9101 (Yunnan: Mengzi,
alt. 1500～2100 m, Henry 9101, PE!) is chosen by the authors, while, Ducloux 102 sell-
ected by C. R. Fraser-Jenkins & S. P. Khullar (1985) can not be taken as the lectotype.
P. nudisorum Ching, ignored by many botanist, is different from P. longipaleatum Christ
by its darkly brown stipe scales and a smaller distribution area at higher altitudes. The paper
also describes the geographical distribution of this section.