LEAFLETS OF PHILIPPINE BOTANY 



EDITED BY A. D. E. ELMER, A. M. 

 Vol. V. Manila, P. I., July 3, 1913. Art. 91 



PALAWAN ACANTHACEAE 



by 



A. D. E. Elmer 



JUSTICIA Houst. 

 Justicia gendarussa Linn. 



Field note: — Suberect shrub, in sand gravelly soil along 

 wooded banks of a river at 500 feet altitude; stem terete, 1 inch 

 thick, 6 feet high, crooked, branched from near the base; wood 

 quite hard, white, odorless and tasteless; bark smooth, gray- 

 ish white; branches numerous, laxly rebranched, green and 

 conspicuously nodo e, suberect; leaves flat, ascending or hori- 

 zontal, thinly coriaceous, much lighter green beneath; bracts 

 with calyx green; corolla ascending and pale violaceus and 

 purplish spotted in the throat. 



Represented by number 12811, Elmer, Puerto Princesa 

 (Mt. Pulgar), Palawan, March, 1911. 



THUNBERQIA Retz. 



Thunbergia fragrans Roxb. 



Field-note; — A twining perennial vine, upon shrubberies 

 along a thicketed stream bank of low compact black soil 

 near the Balsahan river at 50 feet altitude; stem branched, 

 hispidulous, dark green, quadrangular and more or less twist- 

 ing; leaves ascending, similarly rough, subchartaceous, flat 

 or shallowly folded upon the upper side, tips recurved, much 

 paler green beneath; flowers solitary from the leaf axils, erect, 

 the angular pedicels and two bracts green; calyx very pal© 

 green; corolla pure white, constricted at both ends of the 



