Vol. 35, pp. 117-124 October 17, 1922 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW PLANTS FROM SOUTH AND CENTRAL AMERICA 

 COLLECTED BY WILSON POPENOE. 



BY S. F. BLAKE. 



In the course of identification of the specimens collected by 

 Wilson Popenoe during his recent trip to Central and South 

 America for the Office of Foreign Seed and Plant Introduction 

 I have found nine apparently unnamed species. These are 

 described here in order that the names may be available for use 

 in papers to be published elsewhere by Mr. Popenoe on the 

 results of his trip. 



Tibouchina asperipilis Blake, sp. nov. 



Shrub 1.3 m. high, much branched; branches terete, densely hispid- 

 pilose, the hairs wide-spreading, about 0.7 mm. long, minutely hispidulous 

 throughout, with blackish base and brownish tip; internodes 1 to 3 cm. 

 long; petioles similarly pubescent, 2 to 4 mm. long; leaf blades ovate or the 

 uppermost suborbicular-ovate, 1 to 2.8 cm. long, 1 to 1.6 cm. wide, acute, 

 at base broadly rounded or slightly cordate, minutely serrulate, above dark 

 green, bullate, densely pilose-setose with ascending yellowish-white hairs 

 with adnate bases, beneath paler green, densely spreading-hispid-pilose 

 and hispidulous along all the veins and veinlets, essentially glabrous 

 between them, 5-pUnerved or obscurely 7-plinerved (the lateral nerves 

 shortly coalescent at base), the veins and veinlets impressed above, foveo- 

 late-reticulate beneath; cymes 3-flowered, on mostly paired terminal 

 branchlets, subtended by 2 free bracts 7 mm. long or less; pedicels 1 to 4 

 mm. long; calyx 2-bracteolate at base, the bracteoles oblong, about 2 mm. 

 long, deciduous; calyx tube campanulate, 7 to 8 mm. long, densely setose- 

 pilose with subappressed or ascending hairs, the lobes 5, lance-ovate, 8 to 

 10 mm. long, strigose and cilia te, contracted near middle, with acute 3-nerved 

 herbaceous tips, persistent; petals 5, "purple, " obovate, ciliate, 1.5 cm. long; 

 stamens 10, alternately unequal, glabrous throughout, the filaments 8 and 

 12 mm. long, the subulate beaked anthers 7 and 9 mm. long, the free por- 

 tions of the connectives 0.5 and 2.8 mm. long, with 2 large rounded golden 

 lobes at base; ovary strigose at apex, 5-celled, shortly 5-lobed. 



Type in the U. S. National Herbarium, no. 1067084, collected in open 



26— Proc. Biol. Soc. Wash., Vol. 35, 1922. (117) 



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