484 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Petioles 5 to 6 em. long; corolla about 7.5 mm. long, barbate at the 
throat. (Panama.)_.-_.---..- 6. V. masoniana Pittier. 
Petioles 9 to 12 cm. long; corolla 12 to 14 mm. long, puberulous at the 
throat. (Central America.)__._._._.7. V. longeracemosa Pittier. 
Cymes not paniculate, few-flowered, sometimes in subcorymbose inflorescences ;. 
leaflets 3 to 7, normally 8 or 5. CyMosar. 
Cymes simple, long-pedunculate. 
Leaves 3-foliolate. Corolla tube 3 times as long as the calyx. (Trinidad, 
Venezuela.)_-----_--- 8. V. divaricata Swartz. 
Leaves 5-foliolate. 
Leaflets sessile or almost so; corolla tube only twice as long as the 
calyx. (Venezuela.)_-----_--_---__ 9, V. bignonioides H. B. K.. 
Leaflets distinctly petiolulate; corolla tube much longer than the calyx. 
Corolla woolly at the throat; calyx distinctly but shortly repand-den- 
tate. (Trinidad, Venezuela.)__--___________ 10. V. capitata Vahl. 
Corolla almost glabrous at the throat; calyx hardly denticulate. 
(British Guiana.)__-______ 11, V. schomburgkiana Schauer. 
Cymes corymbose, 
Leaflets 3. 
Petioles, rachis of the inflorescence, and inferior face of the leaflets. 
softly tomentose, (Mexico.)________._. 12. V. mollis H. B. K. 
Petioles and rachis of the inflorescence minutely pubescent, the mature 
leaflets glabrous. (Panama.)____13, V. floridula Duchass. & Walp. 
Leaflets 5 or 7. 
Calyx distinctly toothed; leaflets gray-tomentose beneath. (Brazil, Co- 
lombia.)_--_----- 14. V. cymosa Bert. 
Calyx hardly denticulate; leaflets glabrous. (Venezuela.) 
15. V. orinocensis H. B. K. 
DESCRIPTION OF SPECIES. 
Vitex columbiensis Pittier, sp. nov, 
A tree, 10 meters high; trunk 30 em. in diameter at the base; new growth, 
petioles, and rachis of the inflorescence more or less puberulous. 
Leaves 4 or 5-foliolate, the petioles stout, subcanaliculate, 3.5 to 6.5 em. 
long; petiolules 2 to 7 mm. long; leaflet blades oblong-elliptic or obovate 
acutely attenuate at the base, obtuse (or even emarginate), acute, or acutel) 
subacuminate at the apex, 3.5 to 20 em. long, 2 to 7 em. broad, glabrous and 
impressed-reticulate above, densely and sordidly pilose-tomentose beneath, with 
prominent costa and lateral veins. 
Cymes in narrow axillary elongate panicles 10 to 19 cm. long, the main rachis 
slender, the peduncles 4 to 7 em. long, the branchlets not over 3 cm. long ; 
bractlets oblong or lanceolate, 3 to 4 mm. long, densely grayish-hairy ; pedicels 
1 to 3.5 mm. long, grayish-pubescent; calyx campanulate, grayish-hairy, 4 mm. 
long, 5 or 6-toothed, the teeth nearly 1 mm. long, narrow, obtuse or subacute; 
corolla blue, 10 mm. long, glandular-pubescent without, hairy at the insertion 
of the stamens and at the base of the median lobe within, the tube 3.8 mm. 
long, the inferior median lobe suborbicular, about 4 mm. long and broad, the 
upper lobes rounded and very small (1 mm, long) ; stamens didynamous, ex- 
serted, the longer ones about 4.5 mm. long, the filaments densely hairy at the 
base and at the tip, sparsely so between, the anther cells divaricate; ovary 
subglobose, hairy, the style 4.7 mm. long, straight, thicker and bifid at the 
apex, glabrous. | 
Drupe not seen. 
