350 EUBIACE^. 



— Hab. Jamaica!, Wils., March, uncommon in the lower mountains; Antigua I, WulUchl, 

 Dominica !, Imr., in savannahs, S. Vincent !, Guild. ; Trinidad !, Lockh., Sch., Cr., m iielda ; 

 [Trench islands ! ; Guatemala! to Peru ! and Brazil!]. 



163. B. Bartlingiama, DC. I Annual, stout, sufErutescent ; stem tetragonal; leaves 

 elliptical elliptical-oblong, or ovate, acute or hluntish, pilose with scattered down, shortly 



i-.petioled or subsessUe : veins 7-5-jugal : stipular bristles setaceous, scabrous, longer than 

 P their sheath ; flower-whorls many-flowered ; calyx-teeth 4, deltoid-lanceoUte, equal, one- 

 fmrth to one-third as long as the obovafe fruit ; seeds oval, minutely dotted: furrow 

 ;«„«.— Bigelowia alata, Bartl. ! Borr. Perrotetii, Benth. ! (nan Miq). B. Fockeana, Mig. I 

 B. tetraptera, Jfi?. .'—Leaves 3"-8"' long; heads 4"'-6"' diam.— Hab. Trinidad!, Lockh., 

 Cr.; [Mexico!, Venezuela!, Guiana!]. 



164. B. simplex, Or. Rooting at the base, flaccid, glabrescent ; stem tetragonal; 

 leaves lanceolate, pointed, subsessile, ciliate : veins 5-jugal : stipular bristles linear, ciliate, 

 longer than theii- sheath; axils \-floicered ; calyx-teeth 2, "linear" at length obsolete; 

 fruit elliptical : seeds oval, ruffulose.—Dioiia, Sw. I — Habit of Spermacoce tenuior. Stem 

 6"-8", leaves 1", fruit 2'" long.— Hab. Jamaica !, Sw., in the highest mountains, among 



165. B. verticillata, Mey. Perennial, suflfrutescent, glabrous; stem tetragonal; leaves 

 linear-lanceolate, shortly acuminate, sessile: veins distant, sub-2-jugal; stipular bristles 



' setaceous, as long as or a little longer than their sheath ; heads and accessory whorls globose : 

 involucre %-leaved; calyx-teeth 2 (-4), lanceolate, bluntish, half as long as the ovate-oblong 

 fruit ; seeds oblong-linear, roughish. — Spermacoce, Sw. — 1'-4' high ; leaves \\"-\" long, 

 '3"'-2"' broad; heads 6'" diam. : corolla small, white. — Hab. Jamaica!, all coll., in dry pas- 

 tures ; [Haiti !, Mexico ! to Uruguay !]. 



166. "B. spxaosa,, Cham. Schlecht. Annual, rigid ; stem 4-keeled ■subcylindrical : keels 

 and leaf-ribs scabrous or somewhat nmricate ; leaves lanceolate-linear, bluntish at the acu- 

 minate top, sessile, scabrous on the margin: veins distant, 2-3-jugal: stipular bristles 

 setaceous, nearly as long as their sheath ; heads and whorls many-ilowered : involucre 4-8- 

 leaved ; calyx-teeth 2 (-4), lanceolate, acuminate, one-third as long as the oblong fruit ; 

 seeds oblong-linear, roughish. — Spermacoce, Sw. B. densiflora, BC. — 1' high; leaves 24"- 

 1" long, 4"'-2"' broad ; heads 6"'-4"' diam. — Hab. Jamaica (Sw), in fields of the northern 

 districts; [Martinique !, Ssei. Jfa?-^. 272 ; Mexico!]". 



167. B. podocepbala, DC. Suffrutescent, branched, glabrous or glabrescent; stem 

 slender, tetragonal at the summit ; leaves linear, tapering-sessile : veins obsolete : stipular 



' bristles setaceous, nearly as long as their sheath; heads small, many-flowered ; whorls none 

 pf (or rare) : involucre 2(-4)-leaved; calyo'-teeih 2, deltoid or lanceolate, one-fourth to one- 

 third as long as the minute, obovate-oblong fruit ; seeds ollong-linear, roughish. — 1 -3 

 high; leaves l"-4"'long, 14"'-4"' troad ; heads 2"'-3"' diam.— Hab. Antigua!, WulUchl., 

 on the seashore, Dominica !, Imr, in savannahs ; [Cuba !, Desirade !, Texas !, Mexico !]. 



168. B. thymifolia, (?c. (». sp.). Suffrutescent, difl'usc ; branches low, tetragonal, 

 scabrous on the edges; leaves thickish, recurved, linear, ehanuelled-triquetrous, pungent, 

 sessile, glabrous, minutely ciliate, fascicled in the axils : veins inconspicuous : stipules subu- 

 late, ciliate, with the point as long as the sheath ; flowers all terminal in few-flowered 

 heads, supported by the uppermost leaf-pair ; calyx-teeth 2, oblong-lanceolate, pointed, 

 thiclcish, half as long as the corolla, longer than the obovate-oblong fruit, 2 accessory seta- 

 ceous, or none ; seeds oblong, smooth. — Habit of B. ericifolia, but from its stipules ap- 

 proaching Anthospermece. Stem with short intemodes, resembling a Mediterranean Thymus ; 

 leaves 2'''-l"' long ; stipules minute, pointed, or pungent, sometimes cut, but devoid of 

 bristles, the hairs being as small as on the leaf-margin ; calyx-lobes connected above the 

 ovary into a ciliate sheath ; corolla-tube flliform-clavate, 2'" long, thrice as long as the lobes ; 

 anthers 4, oblong, incumbent : filaments short, inserted into the throat ; style shortly 2-fid : 

 stigmas clavate; capsule small, glabrous; seeds furrowed on the inner side. — Hab. Baha- 

 mas !, Hjalmars., Turk Islands. 



56. MITRACAK.PUM, Zucc. 

 Character of Diodia, but capsule circumscissile about the middle. 

 / 169. M. villosum, Cham. SchUcht. Annual; stem simple or few-branched, villous- 



