240 



FLORA OF JAMAICA 



Tetrayteri»- 



Leaves elliptical or oblong-elliptical, apex acute, blunt, or shortly 

 acuminate, glabrous, base rounded, obtuse or wedge-shaped, 5 -13 (-IT)- 

 cm. 1. ; glands wanting. Inflorescence : branches and pedicels white at 

 first with short adpressed hairs, then glabrate ; bracts at base of main 

 branches, leaf-like. Sepals broadly ovate to oblong-ovate, exceeding the 

 glands by 1-1*5 mm.; glands oblong, 2-2"5 mm. 1. Petals elliptical to- 

 roundish, 4-6 mm. 1., margin undulate, base hastate; claws about 3 mm.L 



Fig. 81. — Tetrapteris citrifolia Vets. 



A, Flower cut lengthwise, corolla removed ; s, sepal ; g, gland x 6. 

 B, Samara, nat. size. 



Filaments lanceolate or awl-shaped. Samaras : upper wings oblong or- 

 obovate-oblong, puberulous at the base, 13-16 mm. 1. ; lower wings slightly 

 puberulous, 9-10 mm. 1. ; body somewhat densely puberulous, with a 

 wing-like crest on the back. 



T. inaeqtcalis Cav. which is found in Hispaniola, Porto Rico, Martinique,, 

 and St. Vincent, differs from this species in some characters, especially in 

 the dorsal crest being a mere ridge. 



9. MASCAGNIA Bert. 



Shrubs, trailing and climbing (in the Jamaican species). 

 Stipules minute, at the base of the petiole, deciduous ; glands 

 near the top of the petiole. Inflorescence axillary and terminal 

 racemes, often paniculate; pedicels jointed about the middle. 

 Calyx: sepals 5, broad, persistent; glands 10 or 8. Petals 5, 

 entire or fringed. Stamens 10, all perfect. Ovary 3-lobed, 

 lobes obscurely .3-crested on the back ; styles 3, distinct, unequal, 

 apex foot-like. Samarse 1-3, each with a membranous crest on 

 the back and winged at each margin ; wings obversely deltoid or 

 semicircular. Cotyledons leafy, nearly equal. 



Species 40, natives of tropical America (incl. West Indies). 



M. Hirsea comb. nov. — M. jamaicensis Urh. & Niedenzu in Arh. 

 Inst. Braunsh., Mascagnia 24 (1908) ; Small in N. Amer. Fl. xxv. 

 119. M. Simsiana Griseh. FL Br. W. Ind. 121 (as regards the 

 Jamaican plant) (non Hirsea Simsiana Juss.). Triopteris Hirsea 

 Gsertn. Fruct. a. U9, t. UQ (1791). (Fig. 82.) Type in Herb. 

 Mus. Brit. 



