Chuan Wu (Aconitum carmichaeli Debx.) is a famous chillese drug and is also an important original materials of thc famous Fuzi. The plant was much investigated by both chinese and japanese scientists. In this communication, we have investigated the plant which was introduced by a fine variety from Sichuan and cultivated at Dali prefecture of Yunnan. To bc very intcresting we found that this plant not only changes in quantity of alkaloidal constituents but changes in quality as well in making comparison with Chuan wu cultivated at Shanxi. We also isolated neolinc, songorine and a new compound fuziline from this plant except mesaconitine, hypaconitine, and aconitine reported before.

A new pentacyclic triterpene alcohol (Lupa-20, 30 ene-3, 29, dio1) has becn isolated from the Maytenus orbiculata C.Y. Wu and a tentative structure is given to it based on physical and chemical evidences.

A new minor benzo (c) phenanthridine-type alkaloid, 6-acetony1coryno-line C24H25O6N, mp 210-212'C, was isolated from Corydalis delavayi Franch. This structure was established by the spectroscopic studies.

Some oncogenic Agrobacterium strains have positive reaction of 3-ketola-ctate on DYL medium and good growth ability in YBS medium with sucrose as carbon source. Other oncogenic Agrobacterium strains have negatiye reac- tion of 3-ketolactate reaction and bad growth ability in YBS medium. Using this relation, an oncogenic Agrobacterium strain K-8 was isolated from fresh and young crown gall of peach tree with media DYL and YBS. Four oncoge- nic strains isolated from China had been determined. The strain S-1 and strain B-1 are strains of Agrobacterium tumefaciens Biotype I. The strain K-8 and strain 702 are strains of Agrobacterium tumefaciens Biotype II.

Besed upon the field survey running three times in 1972-1974, the authors have analysed stanting with the natural conditions and studied emphatically the floristic composition and characteristics of vegetationtypes, the main types of vegetations and the rule of their distribution over that region. In this paper the authors suggest some ideas and proposals in respect to the economic eva-luation and available utilization of the vegitational resources in that region All the vegetation data may provide certai scientific basis for reasonable exploitation of the regional vegetational resources.

The paper reports that growth of isolated Petunia hybrida mesophyll protoplasts cultured in eight different media was compared. The protoplasts underwent cell wall regeneration, followed by repeated cell division and developed into colonis in all used media. Calli were obtained in six kinds of these media. Both medium G composed by ourseleves and modified medium K are excellent. Their plating efficiency was raised to 56% and 70% respectively. Effect of some plant hormones on growth and differentiation of the callus was tested. Some hormone combination effected greatly on growth of the callus, Roots had differentiated from the cqlli in some media containing hormones.

The dried roots of Heracleum henryi Wolff were cxtracted with ether, and the extract chromatographed over alumina, afforded two known dihydro- pyranocoumarins and two known furanocoumarins which were idcntified as turgeniifolin B(I ), turgeniifolin C (Ⅱ), bergapten (Ⅲ) and byakangelicin (Ⅳ)by mp. IR and PMR spectra. In addition, γ -spinasterol (Ⅴ ) was also separated.

This report includes six new species and three new records of Boletaceae. Specimens were collected and identified by the authors. The new species are: Boletellus viscosus Bi & Loh sp. nov., Boletellus vulgaris Bi sp. nov., Boletinus cavipoides Bi & Zheng sp. nov., Boletus puellaris Bi & Loh sp. nov., Boletus miniato-aurantiacus Bi & Loh sp. nov. and Boletus pseudo-parvulus Bi sp. nov. Latin descriptions for these new species are in the text. All type specimens are deposited in the Herbarium of Institute of Microbiology of Province Guangdong (HMIGD).

Planta minuta,terricola,laxe caespitosa,dilute viridis.Caulis erectus,0.4-0.6 cm altus,simplex,basi albotomentosus.

Species A. depressae C. B. Clarkc affinis, sed planta humiliorc 30-80 cm alta, peduncul is longioribtls 5 - 9 mm longis, calycibus petatlisque dense punctatis, ovulis 5 in 1 serie differt. Frutex 30-80 cm altus, saepe ramosus, juvenillis ferrugineo-pubs- cens squamulosusque.

Illicium jiadifengpi B. N.Chang, sp. nov. Illicium majus auct. non Hook. f. et Thoms.: A.C. Sinith in Sargentia 7: 49. 1947. p .p ., guoad specim. C .H. Tsoong 83457, 81631; l. macranthum auct. non A.C. Smith: B.N. Chang in Acta Phytotax.Sin. 15(2):78. f. 2. 1977.species affinis I. macrantho A.C. Smith, quod staminibus 21-26, segmentis perianthii 27-32,pedicellis 6-10 mm longis differt.

The genus Trigonotis has 56 species, of which 33 with 5 varieties are from China. In the course of a systematic study of the genus the author observed three distinctive external characters of the nutlet, and used them in the demarcation of the section. All the species of Trigonotis have tetrahedral nutlets, but some of them are bifacial hemispherical tetrahedral (Fig. 1: 1-12), others are obtriangular tetrahedral (Fig. 1: 13-22), and still others are oblique obtr-iangular tetrahedral (Fig. 1, 23-32).

Similissima S.cordifoliae Linn., sed ramulis sparse stellato-pilosis, foliis sparse stellato-pilosis, fructibus 5-carpellatis differt. Suffrutex erectus, ramosissimus, 40 cm altus, caule et ramo sparse stellato- piloso vel subglabro. Folia elliptica, 1.5-4 cm longa, 6-22 mm lata, apice obtusa, basi cordata, interdum rotundata, margine crenato-serrata, supra spa- rse stellato-pilosella vel glabriuscula, subtus stellato-pilosella; petioli 6-20 mm longi, sparse stellato-pilosi; stipulis linearibus, 6 mm longis, stellato-pilosis.

Species S. malaccensi Merr. et Perry affinis, sed inflorescentiis terminali- bus 6-8 cm longis rnultifloris, nervis lateralibus pluribus 13-20-jugis differt. Arbor circ. 13 m alta; ramulis teretibus in sicco cinereo-brunneis. Folia coriacea elliptica;vel oblonga 10-l8 cm longa 4- 7 cm lata, apice bre- viter acuta, acumine obtuso, basi late cuneata, supra olivacea nitidula, subtus brunneo-viridia, nervis lateralibus 13-20-jugis inter se 6-l0 mm remotis, a costa sub angulo 70' abeuntibus, sub marginem 2 mm anastomosantibus, supra visibilibus subtus elevatis, venis reticulatis conspicuis; petiolis 1 -1.5 cm longis.

Sect.Oreocapnos M. Popov of Corydalis Vent. is mainly characterized by having bulbs, they make up a natural group. In this section there are ten species all told, of which eight occur in China. It is divided into three series according to the shapes of the roots, they are: Ser. 1. Fibrosae C.Y. Wu et H. Chuang of tbe fibroUs roots not thickened, Ser, 2, Clapatqe C,Y, WU et H.Chuang of the thickened,fleshy,clavate,fibrous,roots,Eer.3.Fusi-formes C.Y. Wu et H.Chuang of the thickened,fleshy,fusiform fibrous roots.

Sect. Benecinctae Fedde ex C.Y. Wu et T.Y. Shu is an alpine-group of genus Corydalis distribting at the adjoining region of Yunnan, Sichuan and Xizang. It is a quite natural group and differs frorn other groups of Corydalis by its own morphological characters. It was established by Fedde in 1928 (Fedde in Fedde Rep. 25:221, 1928) and afterwards fallen under the grade Subsect. Benecinctae Fedde by the same auther and belonging to his Sect. Eucorydalis Fedde (Fedde in Engler et Prantl, Natural Pflanzenfam. 17b: 134, 1936). Owing to Fedde's Section without a Latin description and some new species discovered in recent years have broken the bounds of Fedde's concept of this Section. It is necessary to rebuild the Fedde's Section and to add Latin description amplifying the contents.