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1.
陈心启 《中国科学院研究生院学报》1981,19(3):323-329
Acanthochlamydoideae, a new subfamily of Amaryllidaceae, is proposed in the pre-
sent paper, based upon the monotypic genus Acanthochlamys which was detected by
the writer in 1979 and named Didymocolpus as a new genus but was preceded by P. C.
Kao in 1980 under the former name. The genus is indeed of great morphological in-
terest. It has semicylindric leaves with a deep furrow on the ventral and dorsal sides
respectively. The lower part of the leaf is connate with, or adnate to, the lower mid-
rib of a rather large and membranous vagina . Such a feature, as far as we know, is
very rare in the monocotyledons.
The flower resembles that of Amaryllidaceae in having inferior ovary, six stamens
and corolla-like perianth with a rather long tube. But it is quite different in other
characters, such as head-like cyme, leaf-like bracts and bisulcate leaves, which all are
foreign to any taxon known in the Amaryllidaceae. On the other hand, it bears some
resemblance particularly in habit and inflorescence to Campynemanthe of the Hy-
poxidaceae, and also to Borya and Bartlingia of the Liliaceae (in the tribe John-
sonieae), but differs in its long perianth-tube and curious leaf structure. It is highly
probable that the resemblance between them is only superficial and not indicative of
direct or close relationship.
This is no doubt a very curious plant of which we still know incompletely, and
for which an appropriate place in the monocotyledons has not yet been found. Con-
sidering its floral characters, however, it seems safe for the present to place it as a
separate subfamily in the Amaryllidaceae and is juxtaposed with the Ixiolirioideae
and Amaryllidoideae, the only two subfamilies of Amaryllidaceae according to H. Mel-
chior (1964), and, of course, to either of them it is not directly related. Its true affinity
remains problematic.
The only species, Acanthochlamys bracteata, is found in Mar-er-kan (102°12'N,
31°47'E), Qian-ning (101°30'N, 30°33'E), Xiang-cheng (99°39'N, 28°54'E) and Dau
cheng (100°10'N, 29°03'E) in western Sichuan of southwest China, in open bushland
or grassland at an altitude between 2700—3500 meters. Its geographical distribution is
mapped and its morphological details are illustrated to facilitate its identification.
相似文献
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讨论了北美火烧兰 Epipactis gigantea、卵叶火烧兰 E．royleana和大叶火烧兰 E．mairei之间的异同。过去被许多作者认为是北美火烧兰 E．gigantea和卵叶火烧兰 E．royleana的中国植物实际上应是大叶火烧兰 E.mairei。卵叶火烧兰在中国仅局限于西藏东南部。 相似文献
3.
对中国兰科植物新种云南巾唇兰Pennilabium yunnanense S.C.Chen&Y.B.Luo作了
描述和绘图。该新种与P.acuminatum（Ridley）Holttum较为接近，区别点在于具较小的花朵
，直径仅3cm;花瓣白色且上面有深紫色斑点，以及唇瓣侧裂片顶端有流苏。 相似文献
4.
关于兰科起源与早期分化的探讨 总被引：1，自引：0，他引：1
陈心启 《中国科学院研究生院学报》1982,20(1):1-22
An attempt has been made in the present paper to discourse on the orgigin and
early differentiation of the Orchidaceae, based on recent information, as well as a
comparative study of some significant characteristics in the most primitive genera ofthis family. Four problems are separately discussed in the following: 相似文献
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讨论了长距美冠兰Eulophia dabia及其近缘种的分类与命名问题。Eulophia dabia的基名Bletia Dabia乃是D．Don(1825)合法发表的最早名称，尽管D．Don的“Dabia”很可能是在袭用Hamilton的“dubia”时拼写上的笔误。为了避免进一步的混乱，明智的做法是接受Don拼写的加词，而避开其语源上的麻烦。在分类方面，可以接受Hooker(1890)将Eulophia campestris Lindl．、E．rupestris Lindl、E．ramentacea Lindl．与Bletia Dabia D．Don：予以合并的观点，以及Deva&Naithani(1986)将Eulophia hormusjii Duthie并入 E．dabia的做法。此外，本文还将Eulophia turkestanica (Litw．)Schltr．和E. faberi Rolfe也归并入 Eulophiadabia。因此，长距美冠兰是一个广布种，白土库曼东部经塔吉克、阿富汗东部、巴基斯坦、克什米尔地区，印度北部、尼泊尔、锡金、不丹、缅甸北部直到中国(云南西南部、四川中部到东部、贵州西南部和江苏)，海拔在400~2300 m之间。 相似文献