VERBENACE.E. 493 



Seeds exalbuminous : radicle mostly inferior. — Leaves usually opposite or whorled, exstipu- 

 late ; flowers centripetal or in centripetal rymes. 



In Verbenacem there are less volatile oils than in Labialce, though several arc used as 

 aromatic astringents (Stachytarpha, Lantand) ; Cornutia is regarded as an antidote against 

 poison. This Order affords excellent timber-trees, e.g. Citharexylon and Pelitia (both 

 called fiddle- wood), Vitex (box-wood) : Avicennia (tbc olive mangrove) is employed for 

 building purposes. 



Tribe I. VERBENEJS. — Ocules erect. — Inflorescence simply centripetal. 



1. TAMONEA, Aubl. 



Calyx 5-dentate : teeth distant. Corolla 2-lipped. Stamens included, didynamous : 

 connective of the superior ones bearing a large, dorsal gland. Stigma capitate. Achenium 

 4-cellcd. — Racemes spiciform, axillary , few-flowered. 



1. T. verbenacea, Sw. SufFrutescent, branched, virgate, scabrous; inferior leaves 

 small, oblong, pinnatifid-serrate, superior often linear, entire ; flowers shortly pedicellate, 

 distant, alternate ; achenium 4-spinose at the summit : spines subuliform, spreading. — Sw. 

 Fl. t. 21. fig. sup. ■. analyt. — Ghiuia, Sw. — l'-2' high ; inferior leaves 4"'-3'", superior 

 6"'_i2'", whitish corolla 3'" long.— Hab. Antigua 1, Nichols., Wullschl.; [Curacao]. 



2. PRIVA, Juss. 



Calyx 5 dentate. Corolla obliquely 5-lobed : limb short, spreading. Stamens included, 

 didynamous. Stigma lateral, compressed. Fruit 2-coeeous : nutlets 2-celled or 1-ccllcd by 

 abortion. — Herbs; flowers distantly alternate, in spiciform, terminal racemes. 



2. P. echinata, Jnss. Hispidulous, sleuder ; leaves ovate, pointed, serrate or erciiate, 

 contracted into the petiole; calyx ventricose in fruit: down uncinate; nutlets 2-celled, 

 mnricate, flattish at the commissure : spines distichous, spreading. — SI. t. 110. f. 1. Jacq. 

 Amer. Pict. t. 9. — Verbena lappulacea, L. P. mexicana, Sieb. Mart. 316 ! — 1'-3' high; 

 leaves 3"-l", pale-blue corolla 2"' long. — Hab. Jamaica!, Wullschl., AL, March, a weed; 

 Antigua!, Wullschl., Dominica!, Imr., S. Lucia!, Aiidcrs., S. Vinceut!, Guild.; Trinidad!, 

 Lockh., Cr., very common ; [Cuba! and Mexico ! to Brazil !]. 



3. VERBENA, L. 



Calyx 5-dentate: one tooth . usually shorter. Corolla obliquely 5-lobed. Stamens in- 

 cluded, didynamous(-2). Stigma blunt, with a second abortive lobe. Fruit 4-coccous, 

 included. — Herbs ; flowers sessile, usually spikate. 



3. V. urticifolia, L. Tall, scabrous with scattered, hispidulous down ; leaves ovate 

 or ovate-lanceolate, contracted into the petiole, coarsely serrate ; spikes filiform, compound : 



flowers distant: bracts two-thirds as long as the small calyx; connective uaked. — 3'— 1' 

 high ; corolla whitish, 2'" long. — Hab. Jamaica !, all coll., a weed ; [Canada! to Mexico ! ; 

 Haiti !]. 



4. BOUCHEA, Cham. 



Calyx long-tubular, 5-dentate. Corolla obliquely 5-lobed. Stamens included, didy- 

 namous. Stigma oblique, subcompr«$sed, with a second abortive lobe. Fruit 2-coccous : 

 nutlets linear, 1 -seeded. — Herbs; flowers in spiciform. racemes. 



4. B. Ehrenbergii, Cham. Annual, erect, slightly pubernlous ; leaves ovate, coarsely 

 serrate above the base, petioled; racemes slender : flowers at length distant, shortly pedicel- 

 late : bracts about half as long as the calyx ; calyx-teeth subulate-setaceous ; nutlets shortly 

 exserted.—Jacq. Ic. Rar. t. 208. — Verbena prismatica, L. (Stachytarpha, V.). — 1 '-2' high; 

 pedicels \ m , calyx 3'", at length 4'", corolla-tube 5'", nutlets 5'" long; flowers light-purple 

 or violet. — Hab. Jamaica!, all coll., a common weed; Antigua!, Wullschl.; [Haiti!; 

 Mexico ! to Venezuela ! and New Granada !]. 



♦ 2k2 



