狭瓣杨桐（新种）查看源代码讨论查看历史
| 狭瓣杨桐（新种） |
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中文名:狭瓣杨桐（新种） 外文名:Adinandra lancipetala L. K. Ling, sp. Nov 类 别:植物 生长周期:十年期木本植物 |
简介
狭瓣杨桐（新种），学名 Adinandra lancipetala L. K. Ling, sp. Nov. Haec species valde similis A. bockianae, sed a quo differt laminis tenuiter coriaceis lanceolatis, sepalis longe ovatis, apice acutis, calyce persistenti saepe reflexo, petalis lanceolatis, longis quam latis circa 3-plo magnis, apice acuminatis, staminibus minoribus 15-17, illa adnodum proxima A. hirtae et A. glischrolomae, quae sed differt gemmis terminalibus, surculis, sepalis omnino dense suffuse longo-sericeis, foliis coriaceis, cras-sioribus, oblongo-ellipticis, floribus longe magnioribus et staminibus plurimis circa 25-35, stylo piloso.
Frutex vel arbor 2-18 m alta, trunco circa 20-30 cm in diam. ; rami cylindrici, ra-mulis fuscis vel griseo-brunneis, glabris, hornotinis, fulvidis vel brunneis, ; gemmis termi-natae dense fulvo-brunneae diffuse-pilosae. Folia alterna tenuiter coriacea, lanceolata vel oblonga, 6-10 cm longa, 1.7-3 cm lata, apice acuminata vel longe acuminata, interdurn caudata, basi late cuneata vel orbiculari-cuneata, margine intergra; supra saturate viridia, glabra, subtus viridula, dense f ulvo-adpresso-pubescentia, ad costam densissima, inter-dum vetera laxiora, nervis lateralibus utrinsecus 10-13, supra conspicuis, subtus parce conspicuis et parce elevatis;
petioli breies, 2-3 mm longi, supra sulcati, subtus pilosi. Flores vulgo 1-2 axillares vel ramulis foliorum delapsorum nascentes; pedicelli 5-9mm longi, dense pubescentes; bracteolae 2, ovatae vel longe ovatae, 1-3 mm longae, apice acutae, extus dense pilosae, persistentes; sepala 5, longe ovata, 4-6 mm longa, 2-2.5 mm lata, apice acuta, margine integra, sericea, interdum glandula, extus dense fulvo-adpresso-pilosa;
petala 5, fulvida, lanceolata vel ovato-lanceolata, 6-12 mm longa, 2-3 mm lata, apice acuta, margine integra, extus medio dense fulvo-adpresso-sericea; stamina 15-17, 4-6 mm longa, filamenta 1.5-2 mm. longa, sublibera, basi corollarum inserta, glabra; antherae lineari lanceloatae, 2-2.5 mm longae, pilosae, apice apiculatae, 1-1.5 mm longae;
ovarium ovato-rotundatum, fulvo-sericeum, 3-loculare, ovula in quoque loculo plurima, stylus simplex, 4-9 mm longus, glaber. Fructus globo-sus maturus circa 8 mm diam. , calyce persistente vulgo obliquus vel plus minusque re-flexo, stylo persistente, usque ad 12 mm longo, glabro;
semina plurima, brunnea, compresso-reniformia, nitida; testae reticulatae.
产地生境
Guangxi: Longzhou Xian（龙州县）, Daqingshan（大青山）, alt. 550 m, in dense forest or margin, Dec. 23, 1957, tree, 18 m. high, 20 cm D. B. H.（胸高直径）, flowers white, Tam Pui-cheung（谭沛祥）57576 (type IBK); same locality, alt. 1000 m, in dense forest, June, 16, 957. tree, 13 m high, 30 cm D. B. H.（胸高直径）, fruit green, Chun Shao-qing（陈少卿）12647; Yunnan: Fuling Man（富宁县）, Longma（龙马）, alt.1000 m, May, 2, 1940, shrub 2 m high, fruit green, Wang Chi-wu（王启无）89065.