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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 4 



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No lectotype was selected since material was not seen of either of the syn- 

 types which had been annotated by Cogniaux (except the specimen in the Cog- 

 niaux herbarium). Some of the Jameson sheets are unnumbered and some are num- 

 bered 193\ also, without correlation, some have complete data on the place of 

 collection (Chimborazo) and some are merely labeled "Quito"; these specimens 

 are apparently all parts of one collection and have been so cited. 



B. alpinum is very closely related to B. lindenii, and can be differentiated 

 from that species only by the 4- rather than 5-merous flowers; all except 1 of the 

 73 examinable flowers among the various collections ascribed here to B. alpinum 

 were 4-merous. A part of the collections (Rimbach 21 p.p., Rimbach 137 p.p., 

 Penland & Summers 325, Acosta 7231 , Scolnik 1542) have leaves above and be- 

 low glabrous except along the primaries on the lower surfaces, thus duplicating 

 the more glabrous specimens of B. lindenii. The future disposition of B. alpinum 

 will probably be as a subspecies of B. lindenii. B. alpinum may be differentiated 

 from B. grisebachii by a combination of rather insignificant characters which, 

 however, give the Ecuadorian species quite a different aspect; drooping (rather 

 than erect) more slender terminal peduncular internodes, predominantly 5-flowered 

 inflorescences, pedicels longer below than above the pedicellar bracteoles, and 

 much less acute petals. The smaller leaves, denser hypanthial pubescence, less- 

 developed inflorescences, and quite different sepals separate B. alpinum from the 

 small-leaved and glabrous element of B. sanguinolentum. 



29. Brachyotum strigosum (L. f.) Triana, Trans. Linn. Soc. 28: 49. 1871. 



Melastoma strigosa Linn. f. Suppl. Plant. 236. 1781. 

 Rhexia stricta Bonpl. Rhexies 19. 1806-1808. 

 Chaetogastra stricta (Bonpl.) DC. Prodr. 3: 134. 1828. 



Alifana striata [misspelling of stricta] (Bonpl.) Raf. Syl. Tell. 101. 1838. 



Chaetogastra goudotii Naudin, Ann. Sci. Nat. III. 14: 131. 1850. 



? Brachyotum strictum Triana, Trans. Linn. Soc. 28: 166. 1871. Nomen. 



Trichomes smooth. Branchlets rounded-quadrangular, densely and persistently 

 strigose. Petiole 1-4 mm. Blade (7-)l l-l6(-20) x (2.5-)4-8(-10) mm., lanceolate 

 to ovate with the apex acute to narrowly obtuse and the base obtuse, the 3 pri- 

 maries (occasionally an additional pair of indistinct marginals) deeply and finely 

 impressed above and elevated below, the secondaries obscure or invisible above 

 and obscurely elevated below; above moderately strigulose to short-strigose, the 

 fine hairs (2-)3~5(~8)/mm. 2 with their basal %-% adherent and not expanded; be- 

 low moderately to densely short-strigose on the primaries, sparsely strigulose on 

 the surface (3-)5-7(-9)/mm. 2 , with clusters of glands subtending the surface hairs 

 and also sparsely on the surface. Flowers predominantly 5-merous, mostly soli- 

 tary on short branchlets in opposite upper leaf axils, in very floriferous branches 

 sometimes ternate with no differentiated peduncle. Pedicel 2-5 mm. long above 

 the last persistent slightly-reduced leaves (bracteoles ?). Hypanthium 4.5-6 x 4- 

 5.5 mm., 0.3-0.4 mm. thick medianly, densely strigose, the stout hairs 4-8/mm. 2 

 and to 2-5 x 0.2-0.5 mm. Sepals (4.5*)6-10 x (3-)4.5"7.5 mm., broadly ovate with 

 acute apices, barely (0.4-0.7 mm.) united at bases, generally imbricate medianly 

 0.5-1.5 mm. Petals deep purple, 13-17 x 10-15 mm., symmetrically or slightly 

 asymmetrically obovate with the apex rounded to rounded-truncate, the gland- 

 tipped cilia 0.1-0.5 mm. (the several subterminal 0.4-1 mm., the terminal one 

 0.8-1.7 mm.). Filaments 4-6 mm.; anthers 3" 5 mm.; connective at anther base 

 (0.8-)1.2-2.2 mm., free of the anther (0.6-)0.8-1.5 mm., the ventral lobes (0.4-) 

 0.8-1.5 mm. long, each lobe often as much as 0.7 mm. wide and often irregularly 

 lobulate at its free end. Style (l6-)20-25 x 0.5-0.7 mm., exserted 4-8 mm. Ovary 

 4.5-7 x 3*4.5 mm., moderately strigulose to strigose on the apical ( 1— )2— 3 mm., 

 the apical lobes 0.3-0.7(-0.9) mm. above the locules. 



