This paper focus on the comparison between the 13C NMR chemical shifts meas-ured (δmes) wlih those calculated (δcal) by Savitsky additivity rule of 23 depsides; the discuss in of the effects of substituted group and substituted position in substituted benzenes of the depside; and the predict rule for assinging the chemical shifts in substituent benzenes of the depside.

Two new iridoid glycosides, scrospioside A and B along with known harpagoside and p-methoxycinnamic acid were isolated from the roots of Scrophularia spicata Fr., a Zang (Tibetan) nationality's folk medicinal plant in Yunnan. By the spectral data, their structures were elucidated as 6-0-α-L-[2,4-diacetyl-3-trans-cinnamoyl]-rhamnopyranosyl catalpol and 6-0-α-L-[2-acetyl-3-trans-cinnamoyl]-rhamnopyranosyl catalpol, respectively.

A new dammarane triterpenoid, neoalsomitin A(l) were isolated from the rhizomes of Neoalsomitra integrifoliola, a Chinese cucurbitaceous plant collected in Xishuangbanna, South-Yunnan, China. On the basis of spectral analyses and chemical evidence, the chemical structure of neoalsomitin A (1) was established as 3β, 12β, 23β, 25-tetrahydroxy-20S, 24S-epoxy-dammarane.

Two proteins named ZP-1 and ZP-2 in rhizome of Panaxjaponicus var. major were isolated by the procedure including saline solution extraction, dialysis, ion exchange chromatography, and gel filtration. On PSA media, ZP-2 inhibited obviously the growth of mycelia of Trichodema viride and Fusarium graminearum. The protein contained two subunits (MW. 27 and 28kD), and its molecular weights were 55 and 66kD respectively determined by SDS-PAGE and Sephadex G-75 filtration. By PAS reaction, it was shown that ZP-2 was a glycoprotein, which contained glucose, mannose, fucose, xylose, galactose, rhamnose, and uronic acids. The contents of neutral sugars and uronic acids were 28.91 and 22.76 respectively. The protein was rich in Asp and Glu, but had no activity of hemagglutination, chitinase, and β-1, 3-glucanase.

In this paper 12 Fl hybrids of four combinations were compared with their parents in morphology and peroxidase isozymes, the results indicated that: (1) Certain morphological characters may be used for initial identification of Fl hybrids. (2) Nine of all hybrids display both parental bands except one peculiar band of C. chrysantha, and possess "hybrid" - bands not observed in either parent; zymograms of the two other plants are the same as female par-ents, possibly not true hybrids. (3) The Fl hybrids produced from C. chrysantha, C. reticulata or C. pitardii var. yunnanica express various zymograms. Based on the above, we propose that it is a much effective method to identify Fl hybrids by using peroxidase isozyme variations.

Comparative anatomy of leaf blade-midribs in the genera Thiadiantha, Baijiana and Momordica is made in this research. Except one species of Momordica, the anatomical da-ta often species are first reported here. The conclusions are: 1. The numbers of vascular bun-dles of leaf blade-midribs in Thiadiantha ranged from 2 to 5, arranged in lined, crossed, or horseshoe-like; in Baijiana from 6 to 7, and in horseshoe-like; and in Momordica from (1) 3 to 5, in horseshoe-like or T-formed. 2. The numbers and forms of arrangment of vascular bun-dles show a wide range of interspecific variation (rarely intraspecific). So those are very impor-tant from the taxonomic point of view. 3.The reduction of the number of vascular bundles is considered as an advanced character because those are assumed from the dry and hot district to a wet and cool one in habitat in evolution.

The pollen morphology of all species in Saururaceae (Saururus chinensis, S. cernuus, Gymnotheca chinensis, G. involucrata, Anemopsis californica and Houttuynia cordata) has been examined under SEM, material was dehydrated in a Denton DCP-1 apparatus. The result shows: Pollen grains anasulcate, also 1-3% anatrichotomosulcate were found in the popula-tion of pollen grains in Houttuynia. Monad, heteropolar, bilateral, elliptic to globose. More or less psilate foveolate to rugulate-foveolate. Small to minute. Pollen morphology gives a sup-port to define Horttuynia, which is more advansed genus compare with Anemopsis.

The genus Physospermopsis (Umbelliferae) included about 11 species. Among them P. hirsutula (C. B. Clarke) Farille, P. lalabhduriana Farille et Malla, P. bhutanensis Farille et Malta, and P. muktinathensis Farille et Malla are endemic in the Himalayas and with two spe-cies i.e. P. obtusiuscula (Wall. ex DC.) Norman, P. rubrinervis (Franchet) Norman widely dis-tributed in both of the Himalayas and the Hengduan mountains of China. There are five spe-cies endemic in SW China, of which four species endemic in the Hengduan Mountains i.e. P. alepidioides (H. Wolff et Hand.-Mazz.) Shan, P. muliensis Shan et S. L. Liou, P. cuneata H. Wolff, P.forrestii (Diels) Norman and another species P. delavayi (Franchet) H. Wolff from the Hengduan Mountains extends to NE and C. Yunnan of China. This region belong to the Sino-Himalayan area. They grow at high altitudes from 2250m to 4800m and concetrate at al-titudes from 2800m to 4000m. Pollen grains of five species were examined by LM and SEM. Pollen morphology of P. alepidiolides and P. muliensis are rhomboidal type. The basal leaves are entire or pinnate. The bracts and bractlets are entire or 2-3-lobed at apex. We support that they are primitive type in Physospermopsis. The pollen grains of P. rubrinervis and P. delavayi are mainly rectangular type.

Abstract The genus Heracleum (Umbelliferae) consists of over 70 species. So far, 26 species and 3 varieties of them are found in China; about 25 species and 1 variety distributed in Sorth -westen China. Hengduan Mountains is one of the another centers of distribution in the world. In the present paper, pollen morphology of 16 species of the genus Heracleum from this area was investigated. Pollen grains of all the species were examined by LM, SEM. Among them 14 species were palynologically reported here for the first time. The study showed that pollen grains of Heracleum in vary shape. Their framework was trigonal in solid form, tricolporate, pleurotreme and exine 2-lauered. The stratification of exine was clear and columellae usually were distinct.

The term endemic means occurring nowhere else, fungi can be endemic to geographic regions on a variety of spatial scales and at different taxonomic levels. A certain genera or species in specified mountainous landscaps with isoleted valleys, nearby deserts, arid habitats or isolation produced as an island formed distantly from mainland, of which the en-demics are members.

Affine J. subhumili W．W．Smith，Sed foliis oblongis omnibus simplicibus,inflorescentiis cymoso-paniculatis axillaribus,corollis albis differt. 

Species haec V.phalacrocarpae Maxim.similis,sed differt ovariis sepalisque glabris,petalis lateralibus intus parce barbatis,calcaribus crassioribus,petiolis tantum supra medium angustissime alatis.

Abstract The present paper deals with the taxonomical history and the range of Gonatanthus (Araceae) which in modified Engle's phylogenic system of Araceae which belongs to the subtribe Steudneriae of tribe Steudnereae from subfamily VII Colocasioideae. The subtribe Steuneriae includs 3 genera: Steudnera, Remusatia, Gonatanthus. The latter is distinguished from Remusatia by the combination of its inflorescences produced with the leaves and the unilocular ovaries with basal placentations. Two species of the genus Gonatanthus are intro-duced G. pumilus (D. Don) Engl. et Krause and a new species G. yunnanensis H. Li et A. Hay which is described and illustrated.

This paper, the first part of the revision on Chinese Euphorbia recorded 14 euphorbian species from China, among them, 1 new species, 2 new recorded species and 18 synonyms.

From the study of the geographical distribution of Lauraceous 22 genera and 209 species in Yunnan Province, the distribution-patterns of genera and species are discussed. The distribution-patterns of genera are divided: Pantropic, Tropical Asia, Eastern Asia-North America, Tropical America and Tropical Asia, as well as Endemic in China. From the analysis of the primitive forms in Yunnan Province, the author discussed the origin of related genera. Furthermore, the author also counted up the number of Lauraceous plants for each genus in relation to the floristic regionalization in Yunnan Province. The distribution-patterns of spe-cies are divided: Tropical America, Old World Tropic, Tropical Asia, Mediterranean, Eastern Asia and Endemic in China. From the analysis of the distribution-patterns of 209 species in Yunnan Province, it was found that SE Yunnan is of great abandance in endemic species.

The present paper deals with the karyotype analysis of Picea asperata Mast. endem-ic to China. The karyotypic formula of the species is K(2n) = 24 = 20m+4sm, which belongs to Stebbins' 2A type and the chromosome complement on relative length is 2n=24=2L+ 12M2+8Mi+2S. The karyotypes of the genus Picea (22 species and varieties) are all composed of metacentric and submetacentric chromosomes (see Table 2), which with arm ratio 2 and they are primary ones. On the basis of the comparison among the karyotypes of Pinaceous genera, the author discusses the relationship and evolutionary position of Picea, and they are supported by morphology, anatomy, palynology, phytochemistry, biochemistry, palaeobotany and so on.