438 1'^^ Philippine Journal of Science 1922 



VITEX Linnaeus 

 VITEX UNIFOLIOLATA sp. nov. 



Frutex vel arbor parva, inflorescentiis parce pubescentibus 

 exceptis glabra, ramulis quadrangulatis, 3 mm diametro; foliis 

 unifoliolatis, coriaceis, nitidis, integris, oblongis, 20 ad 27 cm 

 longis, subtus dense puncticulatis, acuminatis, basi rotundatis, 

 supra plus minusve bullatis, nervis utrinque 9 ad 12, valde per- 

 spicuis; inflorescentiis solitariis, tenuibus, terminalibus, circiter 

 40 cm longis, ramis primariis 1 vel 2, valde elongatis, cymis 

 paucis, distantibus, paucifloris, 3 ad 4 cm longis; calycibus 

 cupulatis, aequaliter 5-lobatis, lobis ovatis, obtusis, 0,5 mm longis ; 

 corolla 11 mm longa, bilabiata; fructibus junioribus glabris, 

 calycis valde accrescentibus. 



A shrub or small tree, glabrous except the inflorescences, the 

 branches pale grayish, somewhat 4-angled, the ultimate ones 

 about 3 mm in diameter. Leaves simple, the petioles, about 1 

 cm long, the leaflets coriaceous, pale olivaceous When dry, oblong, 

 20 to 27 cm long, 7 to 10 cm wide, entire, shining, the upper 

 surface more or less bullate, the lower surface slightly paler than 

 the upper and densely puncticulate, base rounded, apex rather 

 slenderly acuminate; lateral nerves 9 to 12 on each side of the 

 midrib, prominent on both surfaces, curved-anastomosing, the 

 reticulations lax, very prominent. Inflorescences solitary, ter- 

 minal, slender, about 40 cm long, the peduncle about 6 cm long, 

 4-angled, rather slender, about 2.5 mm in diameter, the primary 

 branches 1 or 2 only, greatly elongated, slightly pubescent, the 

 individual cymes widely scattered, few-flowered, 3 to 4 cm long. 

 Flowers blue. Calyx cup-shaped, about 3 mm long, equally 5- 

 lobed, the lobes ovate, obtuse, 0.5 mm long, appressed-pubescent 

 with short hairs. Corolla 11 mm long, the tube 5 mm long, 

 slightly pubescent outside; lower lip 3-lobed, the middle lobe 

 large, orbicular, glabrous, entire, about 5 mm in diameter, the 

 two lateral ones elliptic, rounded, 3 mm long; upper lip 2 mm 

 long, cleft into two broadly ovate, obtuse lobes ; filaments 3 to 4 

 mm long, somewhat exserted, villous below. Young fruit gla- 

 brous or nearly so, inclosed by the accrescent calyx. 



Mindanao, Zamboanga District, Malangas, Bur. Sci. 370J^8 

 Ramos & Edano, October 27, 1919. In forests along streams at 

 low altitudes, locally known as babako. 



The alliance of this species is manifestly with Vitex clarkeana 

 King and Gamble of the Malay Peninsula and Borneo, from 

 which it differs in its very slender inflorescences ; in details of its 



