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NORTH AMERICAN FLORA 



[Volume 25 



Doubtful species 

 GuarEa xirorEsana C. DC. Bull. Herb. Boiss. II. 5: 418. 1905. Known to me only 

 from a specimen with imperfect leaves and an old inflorescence which bears no fruits. Appears 

 to be very similar to Guarea Cuara (J acq.) P. Wilson. 



4. TRICHILIA (P. Br.) L, Syst. ed. 10. 1020. 1759. 



Barbilus P. Br. Hist. Jam. 216, hyponym. 1756. 



Portesia Cav. Diss. 369. 1789. 



Odontandra R. & S. Syst. Veg. S: 511. 1819. 



Moschoxylum A. Juss. Mem. Mus. Paris 19: 238. 1830. 



Acrilia Griseb. Fl. Brit. W. Ind. 129. 1859. 



Pholacilia Griseb. Fl. Brit. W. Ind. 129. 1859. 



Acanlhotrichilia Cook & Coll. Contr. U. S. Nal. Herb. 8: 65. 258. 1903. 



Trees or shrubs. Leaves alternate, commonly odd-pinnate, sometimes equally pinnate, 

 digitately several-foliolate, or unifoliolate; leaflets opposite or alternate, entire or occasionally 

 spiny-toothed, frequently pellucid-dotted. Flowers perfect, in axillary or terminal panicles 

 or cymes. Calyx cup-shaped, 4- or 5-lobed, or rarely of 5 distinct or nearly distinct sepals. 

 Petals 4 or 5, rarely only 3, free or sometimes connate at the base, erect or spreading, imbricate 

 or valvate. Stamens 4-10, usually 8 or 10; filaments broadly winged, more or less united 

 into a cup-shaped staminal tube, truncate or cleft at the apex; anthers inserted at the base of 

 the sinuses or at the apex of the filaments, erect, exserted. Disk annular, free or adnate with 

 the ovary or staminal tube. Ovary 2- or 3-celled, more or less immersed in the disk, or some- 

 times short-stipitate; style short or long; stigma capitate, 2- or 3-lobed. Ovules 2 in each 

 cell, collateral or superposed, occasionally solitary. Fruit a 2- or 3-celled, 2- or 3-valved 

 capsule, loculicidally dehiscing from the apex, the cells 1- or 2-seeded. .Seeds inverted; testa 

 thin, coriaceous; cotyledons fleshy; radicle superior. 



Type species, Trichilia hirta L. 



Calyx 4- or 5-toothed or parted. 



Leaflets or their lobes spine-tipped. 



Leaflets obovate or cuneate-obovate, with a 3-toothed apex; leaves 

 odd-pinnate, the leaflets sometimes closely approximate. 

 Leaves palmately odd-pinnate, the internodes of the rachis often 

 less than 1 mm. long; leaflets 1-3 cm. long. 0.5-1.5 cm. broad. 

 Leaves odd-pinnate, the internodes of the rachis often 1 cm. long 

 or more; leaflets 2-6.5 cm. long, 2-4.5 cm. broad. 

 Leaflets oblong-lanceolate to oblong-elliptic, spine-tipped by the 

 excurrent midrib; leaves digitately 3-5-foliolate. 

 Leaflets not spine-tipped. 



Leaves digitately 3-foliolate, occasionally digitately 4- or 5-folioIate 

 on young shoots. 

 Lateral veins of the leaflets without prominent expansions at the 

 base beneath, of the same thickness throughout, straight and 

 terminating in the thickened leaf-margin; capsule ellipsoid, 

 13-16 mm. long, velvety-pubescent. 

 Lateral veins of the leaflets usually with a more or less prominent 

 expansion at the base beneath, curved upward near the 

 margin and often becoming more or less indistinct. 

 Lateral leaflets elliptic-obovate to obovate-oval, usually 

 rounded and often emarginate at the apex; commonly sessile 

 or subsessile. 

 Lateral leaflets lanceolate, acuminate at the apex, the tip 

 obtuse; petiolules 3-5 mm. long. 

 Leaves odd-pinnate, occasionally equally pinnate. 



Inflorescence paniculate, corymbiform, or raceme-like, axillary, 

 sometimes subterminal. 

 Ovary and capsule glabrous. 

 Leaflets glabrous beneath. 

 Leaflets hirsute beneath. 

 Ovary pubescent, the hairs usually persistent in fruit. 

 Filaments united into a tube. 



Branches, petioles, and rachis villous. 

 Branches, petioles, and rachis puberulent or strigose. 

 Leaflets thin-coriaceous, flexible, not conspicuously 

 reticulate-veined. 

 Petals free. 



Calyx flat, saucer -shaped, about 1.5 mm. wide; 

 leaflets 5-9. 



1. T. triacantha. 



2. T. aquifolia. 



3. T. ynonacantha. 



4. T. reticulata. 



5. T. trifolia. 



6. T. Palmeri. 



7. T. havanensis. 



8. T. Oerstediana. 



9. T. oligantha. 



