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



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52. Leaf blades with 5 primary veins 9. B. intermedium. 



52. Leaf blades with 5 primary veins , 53. 



53. Leaf blades 11-50 X 6-24 mm.; ovary pubescence non-glandular; apical lobes of ovary 

 0.6-1.5 mm 55. 



53* Leaf blades 6-12 x 3-7 mm.; ovary pubescence gland-tipped; apical lobes of ovary 

 0.2-0.3 mm 54. 



54. Petals whitish, obliquely truncate; connective ventrally free of anther 0.3-0.5 mm., 

 the ventral lobes each 0.2-0.3 mm. wide 41. B. figueroae. 



54. Petals deep purple, obtuse; connective ventrally free of anther 0.8-1.4 mm., the ven- 

 tral lobes each 0.6-0.7 mm. wide 40. B. rosmarini folium. 



55. Petals moderately strigulose without 10. B. radula. 



55. Petals glabrous without 11. B. maximowiczii. 



1. Brachyotum quinqueoerve (P. & P.) Triana, Trans. Linn. Soc. 28: 48. 1871. 



Trichomes moderately but minutely roughened to smooth. Branchlets rounded- 

 quadrangular, moderately strigulose to short-strigose. Petiole (4-)10-20 or 2-6 

 (-9) mm. Blade 23-80 or 10-20(-35) x 12-40 or 6-12(-20) mm., ovate or lanceolate 

 to elliptic, the apex acute, and the base obtuse to truncate, with 5 or sometimes 

 7 primaries and usually an additional pair of marginals, the primaries narrowly 

 impressed above and elevated below, the secondaries mostly obscure above and 

 elevated and laxly reticulate below; the 3 central primaries more or less pro- 

 longed below the base of the blade and forming a small triangular extension of the 

 blade proper, the second laterals departing from and 2-7 mm. above the base of 

 the first laterals, the third laterals (when present) also departing from and 1-5 

 mm. above the base of the first laterals, the fourth laterals (marginals, when pre- 

 sent) also from and 1-3 mm. above the base of the first laterals; above moderately 

 strigose or strigulose, the hairs 3-5(-10)/mm. 2 with the basal %-% adherent and 

 usually not greatly nor abruptly expanded; below moderately strigulose to Ioose- 

 short-strigose, the hairs (7-)10-12(-20)/mm. 2 , the glands solitary and usually 10- 

 15/mrn. 2 Flowers constantly 4-merous, in 3"many-flowered panicles which are ter- 

 minal on lateral branches or in upper leaf axils, the inflorescence branches sub- 

 tended by a gradually smaller series of bracts, the ultimate pedicels grouped in 

 2-3-flowered dichasia. Pedicel 0-3 mm. below pedicellar bracteoles, 1-6 mm. 

 above; pedicellar bracteoles 3.5*8 x 0.2-1.7 mm., linear, above glabrous, below 

 moderately strigulose, mostly caducous just before anthesis, in crowded inflores- 

 cences sometimes absent. Hypanthium (3*)4-5(-6) x (2.5")3.5-4.5 mm., 0.2-0.3 

 mm. thick medianly, moderately long-strigulose to short-strigose, the hairs (7-) 

 10-13(-18)/mm. 2 Sepals 5-10 x 3-4 mm., lanceolate and contracted about 0.5*1 

 mm. above the sinuses to 1-2 mm. wide, the apices narrowly acute, united at 

 base^ 0.9-1.2 mm., usually with 1-few sinusal setae well-developed. Petals deep 

 purple or deep blue, ( 10— )12-14(- 15) x (7-)8-10(-ll) mm., rhombic-obovate and 

 slightly asymmetrical, the apices acute, the gland-tipped cilia 0.1-0.4 mm. (the 

 terminal few 0.5-2 mm.). Filaments 3*5.5 mm.; anthers 3*5.5 mm.; connective at 

 anther base 0.7-1.1 mm., free of the anther 0.3*0.6 mm., the ventral lobing 0.1- 

 0.4 mm., and often with minute apiculi on each lobe. Style 18-26 x 0.3-0.5 mm., 

 exserted 6-14 mm. Ovary 3*6 x 2-3.5 mm., moderately to densely strigulose on 

 the apical l-2.5(-3.5) mm., the apical lobes 0.5-0.8(-1.2) mm. above the locules. 



la. Brachyotum quinquenerve var. quinquenerve. 



Rhexia quin queue rv is R. & P. Fl. Per. & Chil. 3: 83. 1802. 



Arthrostemma quinquenerve .(R. & P.) DC. Prodr. 3: 136. 1828. 



Chaetogastra quinquenervis (R. & P.) Naudin, Ann. Sci. Nat. III. 14: 130. 1850. 



Hypanthial and stem hairs usually obviously roughened, at least on basal por- 

 tion. Petiole (4-)10-20 mm. Blade 23-80 x 12-40 mm., with vegetative leaves on 

 branches mostly longer than 40 mm. 



