The Yunnan University, Kunming Institute of Botany, Academia Sinica, on December 5, 1980, 1ost its staff member through 30 years and more,the Senior Professor of Plant Ecology and Geo- botany,Head of Geobotanical Laboratory, (Yun- nan University),President the Yunnan Botanical Society, Editor of Acta Botanica Yunnanica, etc

Valde simile R.dicranoidi (C.Mull.) Par., sed differt costa valde crassa,foliis ovato-lanceolatis, insicco crispatis, humidis erecto-patentis, infra ang-statis, hyalinis membranaceis, vaginatis.Planta minuta, dense caespitosa, caespitibus viridibus, atro-viridibus vel fuscescentibus. Caulis erectus, 0.5-0.8cm. altus, simplex, infra densissime fusco-tomelltosis superne densiuscule foliosis. Folia sicca crispata, humida erecto-pateenia, longe ovato-lanceolata, 3-4mm. longa, ca 1mm. lata; e basi angustata, vaginata; marginibus erectis, integerrimis vel superne serrulatis; nervo validiu- sculo, superne tenuiore, infra apicem folii evanido. Cellulis minimus, viridis, rotundato-hexagonis; inferioribus majoribus, inrregu1ariter rectangularibus, laevibus, pellucidis. Seta tenuisslma, 0.7-1.2cm. longa, rubra. Capsula erecta, cylindrica ca 3mm. lodga. Peristomii dentes filiformes, torti. Operculum longe conicum, obtusum rostratum. Calyptra cucullata.

Species R.araiophyllo Balf. f. et W.W Smith affinis,sed foliis valde angustis, subtus costa glabra, pedicellis sparse glandula,breviter stipitalos gerentibus, filamentis basi versus sparse pubbrulis vel glabrescentibus differt. Frutex, ramulis 3 -5 mm. crassis, hornotinis puberulis, demum glabris. Folia tenuiter coriacea, falcato-lanceolata vel angusto-lanceolata, 5.5-7.5 cm. longa, 1.3-1.7 cm. lata, apice acumine acuminata, margine. paulo crispa,basi cuneata vel late cuneata, supra viridia, glabra,costa impressa, nervis lateralibus utrinsecus circ. 10-jugis, leviter impressis, subtus glabra, glauca, minime rubo-punctata, costa elevata, nervis lateralibus leviter pro- minentis; petiolo 0.8-1.3 cm. longo, glabro, supra sulcato. Inflorescentia Yacemoso-umbellata circ. 9-flora, rhachi circ.

Nine components of the essential oil of Rqbdosia rubescens were isolated by distillation and alumina column chromatography and identified by TLC, GLC, determination of physical constants and IR spectrum: a-pinene(1%), β-pinene (0. 16 % ), limonene (0.16%), 1, 8-cineole (0.33 %), P-cymene (0.16%), nonaldehyde (1.33%), decanal (1%), 0-elemene (20.3%) and palmitic acid (6.6%). Eight compounds (I-VIII)were isolated from the ether extract of the leaves by alumina or silica gel column chromatpgraphy.By means of UV, IR, MS, and NMR spectroscopy, preparation of derivatives and determination of physico-chemical constants, three of them, namely (I), (II)and(VI), were identified as oridonin, ponieidiri and a-amyrin respectively. According to the pharmacological and primary clinical findings, oridonin and ponicidin are two of the anti-neoplastic principles of this plaht.

The Paris polyphylla Sm. var. yunnqnensig (Fr.) H-M. was collected　near Kunming, Yunnan. Five compounds in dried rhizomes of this species were isolated. Three steroid glycosides were identified as diosgenin 3-0-α-L-rhamno- pyranosyl- (1→2) -[α-L-arabinofuranosyl- (1→4 ) ]- β-D-glucopyranoside (Ⅰ),diosgenin 3- 0 -α-L-rhamnopyranosyl- (1 →4 ) -α-L- rhamnopvranosyl-(1 →4 ) - [α-L-rhamnopyranosyl- (1→2 ) ]- β-D-glucopyranoside (Ⅱ) and diosgenin 3 -0 -α-L-rhamnopyranosyl-(1- 4 )-α-L-rhmnopyranosyl (1 →2 ) -β-D-glucopyranoside (dioscin) (Ⅲ). β-ecdysone (Ⅳ) 4nd cane sugar. were also identified from this plant.

In this paper a type of mossy forest that appears in the sclerophyllous evergreen broad-leaf forests is described. It was found by us in 1965 in the Sanyung mountain near Sanyingpan, the northern part of Luchuan district, Yunnan, occupying the altitude 2900-3100 m above sea level. The habitat that this vegetation occurs is a limestone mountain, where a mountainous cloudy belt is always around it, and below it in low altitude there is a canyon. Therefore, the habitat becomes so moist that has resulted in local climate and formed a modern environment for existence of this vegetation.

During the past years, from 1958-1963, it has been the gobd fortune of the writet to Study on the composition of populations designed in the permanent quadrats at the Yunnan Biogeocoenological Station of Tropical Forest. It is author's aim to research the real state of different populations in this com-munity.Basal on this,the author has calculate its process of historical development and the possibility of futural xevolution, which can give a basis for managing this tropical forest.

The genus Ceratostigma is closely related and in evolution paralleled to Dyerophytum. All of the three species Dyerophytum spread in differential parts of the Gondwana Land (E. Africa, S. Africa, Sokotra Islands and India). The genus Ceratostigma is discontinuly distributed in tropical E.Africa, E. Asia (from E.Himalaya in Xizang to N. and E. China, south into Thailand) with S. Xizang as the present distribution center. Probably both genera in origin and certainly evolved near the Tethys during the early Tertiary: Dyerophytum is restricted on the southern side of the Tethys, Ceratostigma has the origin centering in the region from Arabia to S. Xizang. Presence of Ceratostigma in E. AfricH indicate that the species were come from Asia before the break of Red Sea.                                    

The present paper is mainly to discuss the geographic distribution of Sect. Oreades K. T. Fu from Tibet. The distributional centre of the Sect. Oreades plants is in the southwest of our country, i. e., the western part of Sichuan province, the northwestern part of Yunnan Province and the eastern part of the Tibetan Autonomous Region. And its disperses on all sides around.About 15 species and 1 variety, Which are resttictcd to the castern part of Tibetan Autonomous Region.

The genus Maytenus was established in 1782 by Molina and Gymnosporia in 1834 by Wight & Arn. There are 325 species of both have been recorded in the whole world (Airy-Shaw, 1973) and 8 species from China (One is Maytenus, seven are Gymnosporia) .In recent years, some of new species were discovered in China. Up to now, 23 native species and there is also a variety have been verified.

A P.sanguinea (Bl.) Merr. foliis supra glabris, bracteis glomerulorum femineorum nonnullis spinoso-ramosis, perianthio femineo sub fructu 4-costato differt. Proxima P.niveotomentosae W.T. Wang, a gua foliis subtus viridibus ad nervos tantum pilosis Fecedit.Frutex 2- 3 m altus rami strigulosi. Folia alternata; laminae tenuiter chartaceae, elliptico-ovatae, 6.5-13.5 cm longae, 2.6-5.5 cm latae, apice acuminatae, basi rotundatae vel obtusae, margine supra basin denticulatae, supra glabrae, subtus ad nervos tantum pilosae, trinerves, nervis lateralibus 2-jugis; petioli 0.9-1.5 cm longi, puberuli; stipulae lineari-lanceolatae, 6-10 mm longae, extus secus costam minute pnberulae.

Holub in Preslia 36:21.1964;Pichi Sermoli in Webbia 26:154.1971 ...... Lycopodium sect.Phlegmariurus Herter in Engl.Bot.Jharb. 43:Beibl.98:30.1909 ...... Huperzia sect.Phlegmaria Rothmaler in Feddes Reperts.Sp.Nov.54:61.1994. ...... Lycodium subgen.Lepidotis sect. Phlegmaria Baker,Handbook of Fern Allies 8.1887.