Part 4, 1924] MELIACEAE 291 



3. Swietenia macrophvlla G. King, in Hook. 



Ic. pi. 1550. 1886. 



A tree closely resembling the preceding, but larger in all its parts; leaves 15-35 cm. or 

 more in length; leaflets 8-12, obliquely lanceolate, 7.5-15 cm. or more long, 2.5-7 cm. broad, 

 occasionally larger on young shoots, strongly inequilateral and often slightly revolute at the 

 base, the blade sometimes nearly straight on the lower edge, acuminate to long-acuminate at 

 the apex, petioluled, reticulate-veined, entire, coriaceous, glabrous; panicles 9-20 cm. long; 

 bracts and bracteoles suborbicular, deciduous; calyx 2-2.5 mm. broad, the lobes short and 

 truncately rounded; petals obovate or sometimes spatulate, 5-6 mm. long, 2-3 mm. broad; 

 staminal tube cylindric, the teeth acuminate; ovary sessile in a cup-shaped disk; capsule ovoid, 

 12-15 cm. long, 7-7.5 cm. in diameter, acute to acuminate at the apex; seeds 7.5-8.5 cm. 

 long, the reddish-brown wing sometimes 3 cm. broad and about twice as long as the body. 



Typb locality: Botanic Garden, Calcutta; in cultivation from seeds stated to have been 

 collected in Honduras. 



Distribution: Southern Mexico and Central America. 

 Illustration: Hook. Ic. pi. 1550. 



4. Swietenia Mahagoni (L.) Tacq. Enum. PI. 



Carib. 20. 1760. 



Cedrela Mahagoni L. Syst. ed. 10. 940. 1759. 



Cedrus Mahogoni Mill. Gard. Diet. ed. 8. Cedrus no. 2. 1768. 



Swietenia fabrilis Salisb. Prodr. 317. 1796. 



Swietenia acutifolia Stokes, Bot. Mat. Med. 2: 479. 1812. 



A medium-sized or large forest tree with dark reddish-brown bark; leaves 1-3 dm. long; 

 leaflets 4—10, ovate-lanceolate to ovate, 2.5-7 cm. long, 1.3-3.5 cm. broad, strongly inequilat- 

 eral and slightly revolute at the base, sometimes nearly straight on the lower edge, acuminate 

 at the apex, petioluled, reticulate-veined, entire, coriaceous, glabrous; panicles 6-15 cm. long; 

 calyx 2 mm. broad, the lobes semiorbicular, rounded at the apex, minutely denticulate; corolla 

 8-9 mm. broad; petals oblong-obovate or obovate, 3-4 mm. long, 1.8-2.5 mm. broad; teeth 

 of the staminal tube acuminate above the middle; ovary sessile in a cup-shaped disk; capsule 

 ovoid, 6-10 cm. long, 4-6 cm. broad, rarely larger, rounded at the apex, long-gstalked ; seeds 

 5-6 cm. long, the reddish-brown wing about twice as long as the body. 



Type locality: Bahama Islands. 



Distribution: West Indies; southern Florida. 



Illustrations: Catesb. Nat. Hist. Car. 2: pi. 81; E. & P. Nat. Pfl. 3«: /. 153; Bot. Misc. 1: 

 pi. 16. 17; Cav. Diss. pi. 209; Sarg. Silva pi. 43. 44: Sarg. Man. /. 487; Britton. N. Am. Trees 

 /. 548; Gaertn. Fruct. pi. 96; Baillon, Hist. PI. 5: 479./. 471-176; Nutt. Sylva pi. 75; Schnizl. Ic. 

 pi. 226. f. 1; Mem. Mus. Paris 19: pi. 22; Woodv. Med. Bot. pi. 235; ed. 3. pi. 220; DC. Monog. 

 Phan. 1: pi. 8,f. 11; Tussac, Fl. Ant. 4: pi. 23; Descourt. Fl. Ant. pi. 99. 



7. CEDRELA P. Br.; L. Syst. ed. 10. 940. Je 1759. 



Cedrus Mill. Gard. Diet. ed. 7; hyponym. Mr 1759; ed. 8. 1768. 

 Johnsonia Adans. Fam. PI. 2: 343. 1763. 

 Pterosiphon Turcz. Bull. Soc. Nat. Mosc. 36 1 : 589. 1863. 

 Surenus Rumph.; Kuntze, Rev. Gen. 110. 1891. 



Trees with soft light-colored wood. Leaves equally pinnate. Leaflets many-paired, 

 opposite or subopposite. Flowers perfect, in terminal and subterminal panicles. Calyx small, 

 4- or 5-lobed. Petals 4 or 5, erect, imbricate, keeled to the middle or below on the midrib of 

 the inner face, the keel adherent to the disk through the groove. Disk thick or elevated and 

 columnar, 4-6-lobed. Stamens 4-6; filaments free, inserted above on the edge of the disk, 

 sometimes alternating with staminodia; filaments subulate; anthers versatile. Ovary 5- 

 celled, sessile on the top of the disk; style filiform; stigma discoid, often 5-lobed. Ovules 

 pendulous, biseriate, 8-12 in each cell. Fruit a 5-celled, 5-valved coriaceous capsule, septiei- 

 dally dehiscing from the apex to near the base, the valves in two layers, separating from a 

 persistent 5-winged pithy axis. Seeds samaroid, imbricate downward in 2 rows in each cavity, 

 expanded into a chartaceous wing above; endosperm fleshy; embryo straight; cotyledons 

 flat, subfoliaceous; radicle short. 



Type species, Cedrela odorata L . 



