292 



NORTH AMERICAN FLORA 



[Volume 25 



Leaves equally pinnate, rarely odd-pinnate. 



Branches of the inflorescence at right angles to the rachis, or ascending. 

 Leaflets green or grayish and glabrous or more or less densely and 

 softly pubescent beneath with slender, nearly erect, often 

 curved hairs. 

 Petioles, rachis, branches of the inflorescence, and leaflets gla- 

 brous, rarely pubescent in some forms of no. 3. 

 Petiolules 3-12 mm. long. 



Calyx-lobes rounded; petals less than 5 mm. long; leaflets 



equilateral or nearly so at the base. 

 Calyx-lobes acute; petals 5-6.5 mm. long; leaflets usually 

 very inequilateral at the base. 

 Petiolules 3-5 mm. long; leaflets usually darkening in 



drying. 

 Petiolules 5-12 mm. long; leaflets not darkening in 

 drying. 

 Petiolules 2-2.5 cm. long. 

 Petioles, rachis, branches of the inflorescence, and leaflets more 

 or less pubescent. 

 Leaflets 6-10, tapering at the apex into a long, slender, often 

 hair-like tip, conspicuously ciliate, long-petioluled, the 

 petiolules more than 12 mm. long. 

 Capsule 4 — 4.7 cm. long; seeds 2.4 cm. or more long. 

 Capsule 2.5 cm. long; seeds 1.5-1.6 cm. long. 

 Leaflets oblong-lanceolate to oval or orbicular, rounded or 

 acuminate at the apex, usually not conspicuously ciliate, 

 short-petioluled, the petiolules 5-12 mm. long. 

 Leaflets 4—8, oval to orbicular, rounded at both ends. 

 Leaflets 10-30, oblong-lanceolate to oblong-ovate, acu- 

 minate at the apex. 

 Young twigs, branches of the inflorescence, petioles, 



and rachis hirsutulous. 

 Young twigs, branches of the inflorescence, petioles, 

 and rachis puberulent. 

 Leaflets merely puberulent beneath; petioles 5-12 



mm. long. 

 Leaflets hirsutulous beneath; petioles usually less 

 than 4 mm. long. 

 Leaflets 5-12 cm. long, 2.5-4.5 cm. broad. 

 Leaflets 12-20 cm. long. 5.5-7 cm. broad. 

 Leaflets whitish and densely clothed with a short, straight, appressed 

 pubescence beneath. 

 Branches of the inflorescence reflexed. 

 Leaves odd-pinnate. 



Leaflets subsessile, puberulent on both sides. 

 Leaflets distinctly petioluled, glabrous. 



1. C. angustifolia. 



2. C. odorata. 



3. C. 



4. C. longipes. 



5. C. ciliolata. 



6. C. Dugesii. 



7. C. rotunda. 



8. C. fissilis. 



3. C. mexicana. 



9. C. oaxacensis. 

 10. C. Tonduzii. 



1 1 . C. discolor. 



12. C. saxatilis. 



13. C. impari-pinnala. 

 1. C. angustifolia. 



1. Cedrela angustifolia Moc. & Sessd; DC. 

 Prodr. 1: 624. 1824. 



fPlerosiphon mullivenius Turcz. Bull. Soc. Nat. Mosc. 36 1 : 589. 1863. 

 Surenus angustifolia Kuntze, Rev. Gen. 111. 1891. 



A tree with glabrous branches; leaves equally pinnate (appearing odd-pinnate at first 

 sight according to deCandolle), 2.5 dm. long, the petioles and rachis glabrous; leaflets 16-20, 

 subalternate, narrowly lanceolate-oblong, 9-11.5 cm. long, 2.5-2.8 mm. broad, acutish at the 

 base, long-acuminate at the apex, petioluled, firm, glabrous on both sides; branches of the 

 inflorescence glabrous; flowers subsessile; calyx rounded, obtuse, puberulent on the outside; 

 petals elliptic, obtuse, appressed-puberulent ; ovary glabrous; style short; stigma discoid, 

 grooved above. 



Type locality: " Nova Hispania." 

 Distribution: Mexico (and Peru?). 

 Illustrations: Mem. Mus. Paris 19: pi. 23; Moc. & Sesse, Calq. Dess. pi. 153. 



2. Cedrela odorata L. Syst. ed. 10. 940. 1759. 



Cedrus odorata Mill. Gard. Diet. ed. 8. Cedrus no. 1. 1768. 

 Surenus Brown ii Kuntze, Rev. Gen. 111. 1891. 



Cedrela Brownii LoefL; Kuntze, Rev. Gen. Ill, as synonym. 1891. 

 Cedrela Sintenisii C. DC. Ann. Cons. Jard. Geneve 10: 169. 1907. 



A large timber- tree with a reddish-brown, bitter, pleasant-scented wood; leaves equally 

 pinnate, 2.5-4 dm. long, the petioles and rachis glabrous; leaflets 10-16, usually opposite, 



