Four New Species of Dragon's Blood Croton (Euphorbiaceae) from South America

被引：7

作者：

Feio, Ana Carla ^{[1
]}

Ore-Rengifo, Malu I. ^{[2
]}

Berry, Paul E. ^{[3
]}

Riina, Ricarda ^{[4
]}

机构：

[1] Museu Paraense Emilio Goeldi, Programa Capacitacao Inst, Coordenacao Bot, Av Perimetral, BR-66077830 Belem, PA, Brazil

[2] Univ Nacl Mayor San Marcos, Lab Sistemat & Diversidad Vegetal, Museo Hist Nat, Av Arenales 1256, Lima, Peru

[3] Univ Michigan Herbarium, Dept Ecol & Evolutionary Biol, 3600 Vars Dr, Ann Arbor, MI 48108 USA

[4] CSIC, RJB, Plaza Murillo 2, E-28014 Madrid, Spain

来源：

SYSTEMATIC BOTANY | 2018年 / 43卷 / 01期

关键词：

Andes; Crotoneae; diversity; dry forest; montane forest; Neotropics; taxonomy; Tumbes/Piura ecoregion; BLOOD CROTON EUPHORBIACEAE; SECTION CYCLOSTIGMA; ECUADOR; GENUS; SANGRE; ANDES;

D O I：

10.1600/036364418X697111

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We describe and illustrate four new species of dragon's blood trees (Croton sect. Cyclostigma) from western South America. Three of the species, Croton beckii from Bolivia and Peru, C. camposii from Peru, and C. santamartensis from Colombia, grow in montane Andean forest, whereas C. tumbesinus occurs in dry forest of the Tumbes/Piura ecoregion of western Ecuador and Peru. The characters that place them in Croton sect. Cyclostigma include the arborescent habit, the presence of reddish to yellowish latex, an indument of stellate trichomes, conspicuous and persistent stipules, acropetiolar/basilaminar nectary glands, and terminal inflorescences with bisexual cymules at the base. These new species give additional support for the Andean region being the main center of diversity of this Neotropical Croton lade, as well as being a region whose biodiversity knowledge is still incomplete.

引用

页码：212 / 220

页数：9

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