Part 2, 1910] MALPIGHIACEAE 139 



Leaf-blades ovate, ovate-lanceolate, or oblong-lanceolate, 4-11 cm. long, acute or obtuse 

 at the apex, deep-green and ultimately glabrous above, paler and often permanently but 

 sparingly pubescent beneath, acute or rounded at the base, short-petioled ; peduncles 

 ascending; bracts ovate to orbicular-ovate, mostly 2-4 cm. long; sepals ovate to oblong- 

 ovate, 3.5-4 mm. long, the glands fully one half the length of the sepal-body ; larger 

 petals 11-13 mm. long; samaras 1.5-2 cm. long, the wing usually shorter than the body 

 which is transversely tuberculate-ribbed. 



Type locality : Santo Domingo. 



Distribution : West Indies and Central America ; also in northern South America. 



Illustrations : Cav. Diss. pi. 257, f. 1; Arch. Mils. Paris 3 : pi. 12,/. 16. 



12. STIGMAPHYLLON ' A. Juss. in St. Hil. Fl. Bras. 

 Merid. 3 : 48. 1833. 



Woody vines with climbing or trailing stems and branches. Leaves opposite ; blades 

 membranous or leathery, narrow or broad, entire, toothed, lobed or parted, sometimes 

 glandular-cilate, often very variable in shape on the same plant, petioled. Flowers borne 

 in axillary, peduncled, often umbel-like corymbs. Calyx with 8 glands ; sepals 5, broad or 

 rarely narrow, persistent. Corolla yellow; petals 5, the blades unequal, broad, erose, 

 toothed or fimbriate. Stamens 10, various, 6 anther-bearing, 4 opposite the gland-bearing 

 sepals imperfect; filaments unequal, united up to the middle or only at the base ; anthers 

 short, thick. Ovary 3-lobed. Styles 3, distinct, unequal, hook -like, foot-like or foliaceous 

 at the apex. Samaras 2 or 3 together, or solitary, the wing flat, thickened along the ventral 

 side, the body smooth, veiny or crowned. 



Type species, Banisteria auriculata Cav. 



Style-tips hook-like, foot-like or rarely only laterally flattened, that of the 

 anterior (opposite the glandless sepal) one not dilated, those of the 

 posterior ones rarely dilated. 

 Apices of the posterior styles merely hooked or truncate. 



Anterior style slightly shorter than the posterior ones, not slender- 

 beaked. 

 Flower-stalk jointed very near the base ; inflorescence widely 



branched. 1. 5. tomenlosum. 



Flower-stalk jointed between the base and the middle ; inflor- 

 escence simple or nearly so. 

 Leaf-blades smooth, permanently silky-strigillose beneath. 

 Leaf-blades veiny-reticulate, glabrous or nearly so beneath. 

 Anterior style much shorter than the posterior ones, very slender- 

 beaked. 

 Leaf-blades cordate at the base ; sepals suborbicular or oval. 

 Leaf-blades acute or obtuse at the base ; sepals ovate. 



Samara-wing with a triangular acute appendage at the base, 



the appendage 1 mm. high or less. 

 Samara-wing with a broad, deltoid or rounded obtuse wing at 

 the base, the appendage about 2 mm. high. 

 Leaf-blades lanceolate or oblong, often narrowly so, 



rounded at both ends. 

 Leaf -blades narrowly linear, acute at both ends. 

 Apices of the posterior styles dilated. 



Apex of the anterior style subulate ; leaf-blades short-petioled. 

 Flower-stalks jointed at the base ; leaf-blades leathery. 

 Flower-stalks jointed between the middle and the base ; leaf- 

 blades membranous. 

 Apex of the anterior style triangular-lanceolate ; leaf-blades long- 

 petioled. 

 Style-tips dilated, foliaceous. 



Wing of the samara much longer than the body. 



Apical dilation of the anterior style oblong or spatulate. 

 Petal-blades lacerate ; leaf-blades short-petioled. 



Samaras 2-2.5 cm. long, the wing straight. 11. 5. mucronatum . 



Samaras 3-4 cm . long, the wing falcate. 12. .S\ ellipticum. 



Petal-blades undulate or erose-denticulate ; leaf-blades long- 

 petioled. 13. 5. Selerianum. 



Apical dilation of the anterior style very broad, mostly emarginate 

 at the apex. 

 Samara-wings more or less spreading, dilated toward the apex. 



1 Variously spelled by subsequent writers : Stigmaphyllum, Stigmatophyllon, Stigmato- 

 bhyllum. 



