EUPHORBIACE,E. 49 



Subtkibe 6. HI PPOMANFM— Inflorescence centripetal, spiciform : $ bracts usually 

 several-flowered. .Flowers apetalous or naked: calyx imbricative or none. Stamens cen- 

 tral. Seeds either carunculate or included within a dissolving outer integument. 



29. MICROSTACHYS, Just. 



Flowers monoecious. Calyx 3-partite. Stamens 3, distinct : anthers globose, extrorse. 

 Styles 3, simple. Capsule 3-coccous. Seeds oblong, carunculate. — Habit of Tragia ; <J ra- 

 cemes spiciform, lateral : bracts distichous, s/tb-3-flowered : ? flowers supra-axillary, sub- 

 solitary, shortly pedicellate (or racemes androgynous, ? at the base). 



The lateral inflorescence is apparently due to an adhesion of the peduncle to the axis. 



89. M. corniculata, Juss. Annual, subpilose, glabrescent; leaves ovate, acuminate, 

 or lanceolate, subcordate at the eglandular base, minutely serrulate : serratures inconspicuous ; 

 racemes filiform, nearly as long as the opposite petiole ; cocci 4(-6)-spurred : spurs subu- 

 late, divergent, 2 superior, 2 inferior.— Vahl, Eclog. t. 19.— Tragia, V. Cnemidostechys 

 Vahlii, Spr. C. glabrata, Mart. M. guianensis, Kl. — Leaves variable in breadth, glabrous 

 aboVe ; caruncle scutelliform. — Hab. Trinidad !, Lochh., Pd., Cr., in waste places ; [Vene- 

 zuela!, Guiana!, Brazil!]. 



30. SAPIUM, Jacq. 



Flowers monoecious. Calyx $ bifid' or 3-4-dentate ; ? trifid or 3-dentate. Stamens 

 2 (-3), monadelphous at the base, exserted: anthers globose, extrorse. Style 3(-2)- 

 nd : branches simple. Capsule 3-coccous. Seeds subglobose, ecarunculate : exterior integu- 

 ment persistent, rugulose. — Woody plants ; leaves smooth, usually glanduliferous : stipules 

 caducous ; racemes spiciform, terminal or lateral, glanduliferous, primordial $ , suc- 

 ceeding ones androgynous, 9 flowers at the base .- $ bracts with a cluster of Z or many 

 flowers. 



90. S. aucuparium, Jacq. Arboreous ; leaves lanceolate-oblong, oblong, or elliptical, 

 glandular-denticulate or subentire : principal veins numerous : petiole bearing 2 (—4) oblong 

 or ovale glands at or below the top .- stipules triangular-roundish ; racemes filiform, termi- 

 nal ; ^ calyx bifid : filaments 2, diverging from the monadelphous base. — A high, very 

 milky tree ; leaves variable. 



a. Leaves poiuted, shortly tapering at both ends ; terminal racemes subsolitary. — Jacq. 

 Amer. Pict. t. 237 ; Desc. Fl. 3. t. 154.— Hippomane biglandulosa, Aubl. 



0. Hippomane, Mey. ! Leaves pointleted or blunt, rounded at both ends ; terminal ra- 

 cemes usually ternate. — Hab. Trinidad!, Cr.; [Guadeloupe!, Venezuela!, Guiana!]. 



91. S. laurifolium, Gr. Arboreous; leaves leathery, oblong, rounded at both ends, 

 pointleted with a blunt point, repand-entire or obsoletely crenulate, pellucid-dotted .- principal 

 veins numerous : petiole bearing 2 minute subglobose glands below the top : stipules semicor- 

 date ; racemes filiform, terminal, 3-5 -partite ; $ calyx bifid : filaments 2, diverging from the 

 monadelphous base.— Rich. Cub. t. 69. — S. Brownei, Herb. Ms. Stillingia laurifolia, Rich. 

 Hippomane biglandulosa, Sw. (exclus. syn. Si.). — A very milky tree, 20'-50' high ; leaves 

 shining.— Hab. Jamaica!, Macfl, Al. ; [Cuba!, Venezuela!]. 



92. S. cuneatum, Gr. (n. sp.). Leaves obovate or oblong, rounded or bluutish at the 

 top, cuneate at the base, bearing glands on the subentire margin, and at least 2, minute, ses- 

 sile ones above the base of the limb, devoid of pellucid dots : principal veins distant : petiole 

 eglandular .- stipules cordate-roundish ; racemes lateral, arcuate-filiform, simple, numerous ; 

 <? calyx bifid : filaments 2, diverging from the monadelphous base ; style 2-3-fid. — Leaves 

 usually smaller than in the preceding, 4" long, about 2" broad (sometimes twice as long), 

 coetaneous, at length leathery : principal veins 2"'-4'" distant, alternating with smaller 

 ones : petiole 8'" long; racemes 2"-3" long : $ clusters somewhat distant. — Hab. Jamaica!, 

 AI-, Macfl, Pd., March. 



31. HIPPOMANE, L. 



Flowers of Sapium, btrt stamens 2 (-4), monadelphous almost to the base of the distinct 

 anthers. Styles 4-8. Pericarp drupaceous. Seeds ovoid : testa as in Sapium. — Habit and 

 inflorescence of Sapium. 



