Two New Varieties of Stipa (Gramineae) from Nei Mongol

1 Stipa glareosa P.Smirn.var.langshanica Y.Z.Zhao,var.nov.(Fig.1)Species S.glareoeae P.Smirn.affinis,sed aristis inferne tortilibus 3～5mm longis;lemmatis 5～7mmlongis,glabris vel minute pilosis.Herba perennis,dense caespitosa,10～20cm alta.Vaginae pubescentes,margine pilosae;ligulae ad1mm longae,margine dense villosae;laminae 0.3～0.8mm in diam.,extus (subtus) et intus (supra)pubescentes;folia caulina 2～3cm longa,radicalia 4～9cm longa.Paniculae comnactae,in vaginis termi-nalibus;glumae 18～23mm lonsae,3 nerviae,apice longissime acutatae;lemmata 5～7mm longa,glabravel margine et dorso infera medium secus costam pilosa,apice glabra vel minute pilosa,callo circ.1mm lon-go dense pilosis;aristae 3～4.5cm lonsae,unigeniculatae,segmento infimo torto,3～5mm longo,pilis ad     

内蒙古西部黄芪属一新种

中戈壁黄芪新种图版Ⅰ Astragalus centrali-gobicus Z. Y. Chu et Y. Z. Zhao sp. nov. Species A. leasanico Ulbr. similis, sed foliolis 3—9, lanceolato-ellipticis vel lanceolato-ovatis, 10—30 mm longis, 5—15 mm latis; corollis flavis, apice leviter roseolis; leguminibus mature circ. 4.5 cm longis differt. Species A. hamiensi S. B.     

浙江石楠属(蔷薇科)一新种——黑果石楠

描述了产自浙江南部的石楠属Photinia Lindl.一新种——黑果石楠P.atropurpurea P.L. Chiu ex Z.H. Chen et X.F. Jin,并附有墨线图.该种以常绿乔木,花瓣内面基部具绒毛而与裘氏石楠P.chiuana Z.H. Chen, F. Chen et X.F. Jin、毛瓣石楠P.lasiopetala Hayata相近,但树干和大枝常具棘刺,刺长0.5～10 cm;叶片先端急尖或圆钝;叶柄较短,长1～1.8 cm;花较大,直径1.2～1.5 cm;花瓣卵形或卵状圆形,长5～6 mm,花柱3;果实成熟时紫黑色,花柱宿存而显著不同.     

《内蒙古植物志》第五卷唇形科五种植物的学名订正

本文对《内蒙古植物志》第五卷唇形科五种植物的学名进行了订正: Schizonepeta deserticola H.C.Fu et Ninbu 应为S.annua(Pall.)Schischk., 作异名处理; Scutellaria rehderiana Dials应为S.alaschanica Tschern; Lamium album L.var. barbatum Franch. et Sav. 应为L.album L.; Clinopodium chinensis (Benth.) O.Ktze 应为C.chinensis (Benth.)O.Ktze subsp. grandiflorum (Maxim.) Hara; Dracocephalum fruticulosum Steph. subsp. psammophilum (C.Y.Wu et W.T. Wang) H.C.Fu et Sh. Chen 应为D.fruticulosum Steph.     

中国东部木犀科一新种——陈氏女贞

描述了采自中国东部木犀科Oleaceae女贞属Ligustrum L.一新种——陈氏女贞L.chenii W.Y. Xie, X.D. Mei et F. Chen,并附有线描图.新种形态与台湾特有种阿里山女贞L.pricei Hayata相似,不同之处在于叶片卵形至卵状披针形,先端长渐尖或尾状渐尖,基部楔形至近圆形,上面中脉隆起,连同侧脉密被微柔毛,叶柄长3～5 mm,密被微柔毛;花序梗长0～1.4 cm,花梗长1.5～2 mm,花萼长1.1～1.6 mm,花冠淡黄绿色,外面有时带紫色,稀白色,花药长约4 mm;果实顶端常具宿存花柱,长1～2 mm,喙状.     

福建竹类二新种

<正> 福建酸竹 别名:甜竹 新种 图1Acidosasa fujianensis C. S. Chao et H. Y. Zou sp. nov.Species A. chinensi C. D. Chu et C. S. Chao affinis sed culmorum vaginarumauriculis et setis oralibus evolutis, pedicellis brevioribus, 2-13mm. longis, glumis 2,rhachillis puberulis, lemmatibus paleisque albo-pubescentibus differt.     

云南木兰科新植物

1 显脉木兰新种 Magnolia phanerophlebia B. L. Chen, sp. nov. Arbor parva glaberrima, c. 3 m alta. 6 cm in diam., cortice incano laevi: ramuli junniores virides in sicco cinerascentes et pruinosi. Folia sempervirentia, lamina rigide coriacea, obovata vel obovato-elliptica'35-43cm longa, 10-17 cm lata, apice acuta vel breviter acuminata, basi anguste cuneata, supra nitidissima     

甘肃十字花科新植物

抱茎花旗杆(新组合) Dontostemon eiegans Maxim. var. semiamplexicaulis (H. L. Yang)H. L. Yang et M. S. Yan, comb. nov. ——D. semiamplexicaulis H. L. Yang in Journ. NW. Teach. Colleg. (Nat. Sci. S1:38. 1988) A D. elegans folio differt semiamplexicaulis floribus parvis (Petalis 5～7mm). Gansu (甘肃): Minqin (民勤), Huaeryuan (花儿园). Gobi, alt. 1000m. 12. Jun. 1974.     

浙江瑞香科一新种——尖萼荛花

描述了产自浙江的荛花属Wikstroemia Endl.(瑞香科Thymelaeaceae)一新种——尖萼荛花W.acutisepala W.Y. Xie, Z.H. Chen et X.F. Jin,并附有线描图.新种与北江荛花W.monnula Hance相似,不同之处在于花萼长1～1.6 cm,裂片长三角形或狭卵状三角形,长4～5 mm,先端渐尖或骤渐尖;上轮雄蕊着生于萼筒1/2～4/5处,下轮着生于萼筒1/4～2/5处;花盘鳞片1枚,近圆筒形,1侧裂至花盘,先端2～4微裂或啮蚀状,稀半圆筒形而不裂,长为子房的1/5～1/2;核果长3.3～4.2 mm,直径2.2～2.7 mm;种子长2.5～3 mm,直径1.5～1.7 mm.     

贵州重楼属植物—药用新种

黔重楼新种图1Paris guizhouensis S. Z. He, sp. nov.Species P. axialis H. Li affinis sed petalis supra in angusta spathu-lifolia amplificatis; connectivis ultra apices 3--4mm longis productis;stigmatibus 3--4 mm longis, erectia non reflexa differt.Herba erecta. Rhizoma cylindricum, brunneum, 6.5--8.5 cm longum,1.5--2cm crassum densenodosum. Caulis 18--26cm altus brunneolus glaber.     

浙江蓼科一新种——丽水蓼子草

描述了采自中国浙江省的蓼科Polygonaceae蓼属Polygonum L.一新种——丽水蓼子草P.lishuiense Z.H. Chen, D.H. Wu, W.Y. Xie et J.F. Wang,并附有线描图.新种形态与蓼子草P.criopolitanum Hance相似,不同之处在于其茎仅最顶端的节间具腺毛;叶片、叶柄和叶鞘均无腺毛;穗状花序呈圆柱状,长1.5～2.8 cm,直径7～9 mm;每苞片内具2或3花,仅1花可育;花柱2或3;小坚果倒卵状扁球形,双凸镜状,长约1.35 mm,或3棱形,长约1.2 mm,直径约0.7 mm.     

湖南树木三新种

<正> 1.石门鹅耳枥 新种 图版I∶1 Carpinus shimenensis C. J. Qi, sp. nov. Species insignis, ab omnibus speciebus generis foliis late ellipticis, vel late ovatooblongis, minoribus, 3-5 cm longis, 2-3 cm latis, margine acute dentato-duplica-to-serratis, nervis lateralibus 11-13 jugis, supra manifeste impressis, subtus conspicueelevatis, dense villosis, bracteis frucferis semiovatis vel semiovato-rotundis, extra marginedentato-lobatis, intra margine basi auritis facile distinguibilis. Arbor decidua alta 5 m, trunco 20 cm diametro; ramuli juvenales atro-grisei, deindelaete brunnei, internodiis brevissimis. Folia papyracea, elliptica, vel ovato-elliptica, 3-5cm longa, 2-3 cm lata, apice abrupte acura, obtusa vel aliquantum rotunda, basi cordata,aliquantum obliqua, supra adpresse byssaceo-villosa, nervis lateralibus utrinsecus 11-13,distantioni nervi 2-3 mm, cum costis supra impressis, subtus manifeste elevatis, margineirregulariter dentato-duplicato-serratis, serraturis abrupte acutis; petioli breves, crassi,4-11 mm longi, dense villosi; stipulae persistentes, circ. 7 mm longae, rubrobrunneae.Spica fructifera 3-3.5 cm longa, in rhachidi villosae; nuculae ovato-rotundae, circ. 4 mm     

贵州蔷薇属新分类群

1.无子刺梨新种Rosa sterilis S.D.Shi,sp.nov.Species R.fOXburghii Tratt.affinis sed foliolis 7—9.floribus 3—5in corymbum dispositiS,petalis albis,fructibus diam.ca.2 cm,clnereo-brunneis,acheniis sterilibus differt.Frutex Scandens,4—6 m altus;ramuli et petioli purpurei,parceaculeati carvuli,incano—tomentulosi.Folia imparipinnata,7一9 foliolata,     

浙江马鞭草科一新种——琉璃紫珠

描述了产自浙江景宁的紫珠属Callicarpa L.一新种——琉璃紫珠C.liuliana Z.H. Chen, W.Y. Xie et F. Chen.该种与尖萼紫珠C.lobo-apiculata F.P. Metcalf相近,但其叶片倒卵状长圆形、长圆形或卵状长圆形,基部宽楔形、近圆形或微心形,上面侧脉和网脉新鲜时下陷;叶柄长0.5～1.2 cm;聚伞花序着花密集;花萼外面密被星状毛,萼齿宽三角形,先端具钻形尖头,尖头长约0.4 mm;果实直径2.1～3.5 mm而显著不同.     

Characteristics of stemflow for sand-fixed shrubs in Mu Us sandy land, Northwest China

Little work has been done on stemflow for desert shrubs in China. This study measured stemflow in two shrubs of Salix psammophila C. Wang et Chang Y. Yang and Artemisia sphaerocephala Krasch in Mu Us sandy land and established a relationship between stemflow and canopy characteristics, rainfall amount and intensity. During the experimental period, the amount of stemflow for S. psammophila and A. sphaerocephala accounted for 7.6% and 2.7% of the gross rainfall respectively. Statistical analysis showed that there was a significant positive linear correlation between rainfall and stemflow for the two shrubs; while the relationship between stemflow percentage and rainfall suggested that there existed a rainfall depth threshold of 3-5 mm for S. psammophila and 5-7 mm for A. sphaerocephala. Stemflow percentage positively increased with rainfall depth increasing before the rainfall depth threshold values had been reached but showed stability after the threshold. A stepwise regression analysis suggested that the shrubs with more branches, larger crown volume and smaller branch angle inclination tended to collect more volumes of stemflow. Moreover, stemflow amount and percentage increased with the maximum rain intensity increasing in 10 minutes （l10） and the stemflow percentage tended to increase quickly with l10 when it was less than 3.0 mm h^-1 for S. psammophila and 2.0 mm h^-1 for A. sphaerocephala, and then showed stable trend with increasing of 110.     

FRIENDLY EXCHANGE (1984)

△. At the invitation of our Institute, Prof. K. Rose from Rensselaer Polytechnic Institute in U. S. A. came to work as a visiting professor in our Institute from Feb 10 to Aug 17 this year. During his stay here, Prof. K. Rose offered the courses of 1. Electrical Properties of Metals, 2. Materials of Semiconductor, 3. Transformation of Metals and Alloys, 4. Si Crystal for Integrated Circuit to the postgraduates and teachers in our Institute. Our Honorary President, Prof. Chen Xinmin and Advisor, Prof. Huang     

灰口铸铁H20-40激光热处理工艺的研究

对灰口铸铁H2 0 40在激光加热条件下不同的功率密度 (W )、扫描速度 (V)对硬化层深度、硬度及组织进行了系统的研究 .发现当W =4.0 76× 10 3 W /cm2 ,V <5mm/s时灰铁的表面呈熔融状态 ,可获得伪共晶莱氏体组织 .硬度Hv90 7- 10 10 ,硬化层深度S =0 .95mm～ 1.5 4mm .当W <4.0 76× 10 3 W /cm2 ,V >5mm/s时 ,只能获得片状马氏体 石墨的混合组织 .硬度Hv6 90 - 840 ,硬化层深度S =0 .6mm～ 0 .9mm之间 .     

河南玉兰属二新种

描述了河南木兰科Magnoliaceae玉兰属Yulania Spach的两个新品种,即:莓蕊玉兰(Yulania fragar-igynandria T.B.Zhao Z.X.Chen et H.T.Dai,sp.Nov)和大别玉兰Y.dabieshanensis T.B.Zhao Z.X.Chenet H.T.Dai,sp.nov.ined.莓蕊玉兰叶倒卵圆状椭圆形,背面灰绿色,基部心形、圆形,稀楔形.玉蕾顶生,或腋生,大,陀螺状,或卵球状(基部短柱状,长8～12 mm),长2.0～3.0 cm,径2.0～2.5 cm;芽鳞状托叶花前脱落.单花具花被片9～18枚,花瓣状,花被片外面中部以下中间亮紫红色;有时具1～3枚肉质、披针形、亮紫红色花被片.雌雄蕊群大,草莓状,径1.8～2.3 cm,有时具2～5枚雌蕊群而特殊.大别玉兰叶椭圆形及菱萼状—卵圆形.有4种花型.     

浙皖种子植物新资料

在采集、整理和鉴定浙江、安徽种子植物标本的过程中,发现了浙江凤仙花Impatiens chekiangensis Y.L.Chen(凤仙花科Balsaminaceae)的2个新变种,菊科Asteraceae 2个新记录种:六耳铃Blumea sinuata(Lour.)Merr.和四川天名精Carpesium szechuanense F.H.Chen et C.M.Hu.苍南凤仙花(新变种)I.chekiangensis var.cangnanensis Y.L.Xu et X.F.Jin与模式变种的区别在于花梗基部苞片膜质,粉紫色,卵形,唇瓣口部近平展,宽约7mm;多花凤仙花(新变种)var.multiflora Y.L.Xu et X.F.Jin与模式变种的区别在总状花序具3~8朵花,唇瓣口部宽7~10mm.     

贵州树木新分类群及新分布(续)

<正>长柄核果木 新种(图1) Drypetis longipes X. H. Song, sp, nov. Species foliis intergris, pedicellis fructuum 3～4cm. longis instractis. Arbuscula sempervirens, 8 m. alta, tranco 14 cm diam., cortice cineracei, levi,tenuiramis cernuis cinereis vel flavidi-inereis, lenticellis suberosis leviter elevatis,ramulis hornotinis interdum pubescentibus, deinde glabris. Folia alterna tenuicoriacea vel crassi-chartacea, elliptica vel ovato-elliptica, 7～10cm. longa et 3～4cm. lata, apice acuminata vel brevicaudata, acumine obtusis, basi cuneata, obliqua,utringque glabra, nitide, costa media supra elevata vel plana subtus elevata, nervis alteralibus utrinsecus 7～8(～9), curvis, prope marginem consutis, nervulis,subparallelis, subtus elevatis, manifestis, petiolis 3～5mm. longis, purpureis interdum pubescentibus. Fructus juvenes plerumque singulares, globosis viridis,dense brevipubescentis, stylis brevissimis 2-lobatis, persistentibus, stigmatibus latissimis, reniformibus, pedicellis 3～4cm. longis.