160 URTICACEiE. 



one side. — Leaves %-nerved: stipules axillary ; flower-clusters in interrupted spikes or axil- 

 lary, exinvolucrate. 



64. B. caudata, Sw. Leaves opposite, large, ovate (or lanceolate), pointleted or 

 pointed, crenate-serrate, scabrous above, pubescent beneath : stipules distinct ; spikes axil- 

 lary, simple, elongated, flexuose, nodd'mg, as long as or exceeding the leaves, dioecious ; 



? calyx at length compressed, marginate. — Mart. Fl. Bras. 12. t. 64, 66. — A shrub, 

 3'-15' high; leaves 10"-6" long, long-petioled. — Hab. Jamaica!, all coll., in mountain- 

 valleys ; [Mexico ! to New Granada! and Brazil !]. 



65. B. cylindrica, W. Leaves opposite (rarely alternate), ovate or oblong-lanceolate, 

 aeuminate, crenate-serrate, glabrescent : stipules distinct ; spikes axillary, simple (rarely 

 branched), often leafy at the top, spreading-erect, exceeded by the leaves, usually andro- 

 gynous: the clusters unisexual ; £ calyx compressed, thickly margined. — SI. t. 82. f. 2; 

 Wedd. Monogr. Urt. t. 11./. 18. — Urtica, L. U. reticulata, Sw. .'.• a broad leaved form 

 with branched spikes. B. litoralis, Sw. ! : a narrow-leaved form. — Stem 2'-3' high, suffru- 

 tescent or herbaceous ; leaves 3"-6" long. — Hab. Jamaica !, M'Nab, Al., March ; Trinidad!, 

 Cr. ; [Canada ! to Texas ! ; Cuba !, New Granada !, Brazil !, Uruguay !]. 



66. B. ramiflora, Jacq. Leaves alternate, obliquely ovate-oblong or lanceolate, acu- 

 minate, often pointleted, serrate, hairy or nearly glabrescent, alternately of unequal growth: 

 the two lateral nerves of unequal length : stipules elongated, distinct ; flower-clusters la- 

 teral or axillary, unisexual, monoecious, forming interrupted spikes below the leafy top of the 

 branchlets; <J calyx 3-androus, ? at length biconvex. — Jacq. Amer. Picl.t. 236. — A shrub, 

 6'-8' high ; larger leaves 3"-12", smaller l"-5" long, the latter shorter petioled. — Hab. Ja- 

 maica !, all coll. ; Dominica !, Imr. ; S. Vincent !, Guild. ; Trinidad !, Cr. 



15. PHENAX, Wedd. CaT^ , 



Calyx <J 3-5-lobed, $ none. Stigma filiform, at length deciduous. — Leaves alternate, 

 'i(-o)-nerved: stipules lateral; flower-clusters axillary, surrounded by bracts. 



67- Ph. urticifolius, Wedd. ! Pubescent ; leaves ovate, pointed, dentate-serrate, 

 usually rugose, punctate on the upper side ; flower-clusters androgynous, globose, exceeded 

 by the subulate stipules : bracts ovate ; $ calyx 4-lobed, 4-andious, cainpanulate, devoid 

 of a transverse plica. — Wedd. Monogr. Urt. t. 16 A. — Bcehmeria, Pers. B. hirta, Sw. 

 Ph. hevigatus, Wedd. Ph. haitiensis, Wedd. — A shrub or suffrutescent herb, 2-8' high; 

 leaves 4'-2" long ; flower-clusters 4'" diam. — Hab. Jamaica !, Pd., Wils., in mountain- 

 woods at 4000' alt. ; [Mexico !, Venezuela !, New Granada ! to Bolivia]. 



68. Ph. vulgaris, Wedd. Hispidulons with scattered hairs, or glabrescent ; leaves 

 ovate-lanceolate or ovate, acuminate, serrate with the base entire, membranaceous, subci- 

 liate •. flower-clusters androgynous, small, equalling the subulate stipules : exterior bracts 

 numerous, oval or roundish, ciliate, ? ones sheathing ; $ calyx 5-4-lobed, 5-4-androus: 

 lobes infexed with a transverse plica ; achenium ovate, pointed, muricate. — Parietaria 

 Sonneratii, Poir. Gesnouinia bcehmerioides, Miq. — Stem 3'-4' high, herbaceous or suffru- 

 tescent; leaves 3"-lV long; flower-clusters 2'" diam. — Hab. Trinidad!, Cr. ; [Martinique, 

 Brazil]. 



16. ROUSSELIA, Gaud. 



Flowers <J cyinose, exinvolucrate, ? in 2-flowered, 2-bracteate heads. Calyx 6* 4- 



Eartite, $ ventricose, 2-4-dentate, at length compressed, margined, accrescent to the 

 ract. Stigma filiform, deciduous. — A diffuse, creeping herb ; leaves alternate, quite en- 

 tire : stipules lateral ; inflorescence axillary, monoecious .- <j? bracts quite entire, bearing 

 uncinate hairs. 



69. R. lappulacea, Gaud. — Wedd. Monogr. Urt. t. \% J). — Urtica, Sw. ! — Leaves 

 ovate, pointed, 8"'-3'" long, puberulous or glabrate ; $ cymes shortly peduncled, $ heads 

 in the uppermost axils, sessile. — Hab. Jamaica!, Sw.,AL, Wils., Wullschl., common among 

 stones; Dominica!, Imr.; [Haiti, S. Thomas]. 



Cannabis sativa, L., has been introduced into Jamaica. 



