404 NATURAL HISTORY OF PLANTS. 



(pedicels not sessile) ; pedicels articulate bracteolate. ( Tropical 

 America.) See p. 438. 



33. Diplopterys A. Juss.^ — Flowers nearly of Hirea ; calyx 8- 

 glandulose. Petals unguiculate not fimbriate. Stamens 10, glabrous ; 

 connective incrassate papillose. Germen 3-lobed ; branches of style 

 short, truncate at stigmatose apex. Samaraî 3, dorsally produced to 

 thick ligneous wings or keels ; dorsal wing crestlike ; the two lateral 

 confluent at base and apex. Other characters of Hirea. — A scandent 

 shrub ; - leaves opposite entire exstipulate ; flowers ^ in spurious 

 axillary short-umbels, 4-florous, often 2-nate; pedicels very short 

 bracteate, 2-bracteolato. [Guiana.*) 



34. Tetrapterys Cav.^ — Flowers nearly of iT/rra ; calyx 8-10- 

 glandulose (or more rarely 0). Petals dentate or subintegrate. 

 Stamens 10, five of which are longer; anthers glabrous or hirsute. 

 Germen 3-lobed; branches of style truncate at stigmatose apex. 

 Samarœ 1-3, produced at margins to 4 wings, cruciately divergent, 

 more or less cristate at back. Other characters of Hirea. — Shrubs 

 often scandent ; leaves opposite entire eglandulose generally lucid 

 stipulate ; flowers ^ in terminal oftener very ramose compound- cymi- 

 ferous racemes ; pedicels articulate ; bracts and braeteoles sometimes 

 foliaceous. [Tropical America.'^) 



35. Triopterys L.^ — Calyx 8-glandulose. Petals unguiculate 

 subentire. Stamens 10 ; anthers glabrous. Germen 3-lobed ; 

 branches of style short, truncate at stigmatose apex. Samarae 1-3, 

 3-alate ; the two superior wings, marginally ascendent, with the 

 third inferior descendent confluent in one unequally-3-lobed finally 

 membranous-subligneous ; dorsal crests short (or 0). Other characters 

 of Hirea. — Scandent shrubs ; leaves opposite eglandulose glabrous 



1 Dcless. Ic. Sel. iii. 20, t. 33; Malpigh. 323, 116 {Tiioptcrys).—'B.. B. K. Nov. Gen. et Spec. 



t. 20.— Endi. Geii. n. 5567.— B. H. Gen. 260, v. 168.— A. Jess. A. S. E. PI. Bras. Met: iii. 



n. 41. 5, t. 161, 162.— TuRcz. Bull. Mosc. (1858), 



- Becoming black as it dries. i. 394. — Griseb. Mart. Fl. Bras. Malpigh. 75, t. 



3 Golden. 13-17.— Tit. et Pl. Ann. So. Nat. sér. 5, xviii. 



■* Spec. 1. B. Faralias A. Jugs. loc. cit. — 332. — Walp. Rep. v. 300 ; A)iti. ii. 204 ; iv. 



Walp. Rep. V. 339.— Birœa longifolia Rich.— 371 ; vii. 474. 



H. miicronata Rich. (A. Juss.). ' Om. n. 574. — J. Gen. 253. — Lamk. //;. t. 



' Biss. 433, t. 260-262.— A. Juss. Malpigh. 382.— Poir. Bict. tH. 103 (part.).- DC. Broilr. 



263, t. 18.— Spach, Suit, à Buffon, iii. 142.— i. 586.— A. Juss. Malpjgh. 200, t. 18.— Spach, 



Endl. Gen. n. 5674.— B. H. Gen. 260, n. 39. Suit, à Buffon, iii. 141.'— Endl. Oen. n. 6573.— 



5 Golden or reddish. B. H. Gen. 259, n. 38. 



' Spec, ahout 50. Gjeetn. Fruct. ii. 16&, t. 



