Part 4, 1924] MELIACEAE 275 



30. Guarea Hoffmanniana C. DC. in DC. Monog. Phan. 1: 570. 1878. 



Leaves about 35 cm. long; petioles hirtellous, about 1 dm. long, the rachis somewhat 

 angled, densely hirtellous; leaflets 12, obovate-elliptie, 16 cm. long, 6 cm. broad, petioluled, 

 equilateral and acute at the base, acute at the apex, glabrous above, appressed-pilose on the 

 veins beneath, membranaceous, epunctate; branches of the inflorescence densely hirtellous; 

 flowers short-pedicelled; calyx cup-shaped, 5-toothed, the teeth obtuse, appressed-hirsute on 

 the outside; petals 5, densely sericeous on the back, subcoriaceous, acute at the apex, 14 mm. 

 long; staminal tube glabrous, entire; anthers linear, 2 mm. long; ovary densely hirsute, 

 10-celled; style hirsute. (Description compiled.) 



Type locality: Costa Rica. 

 Distribution: Costa Rica. 



31. Guarea Caoba C. DC. Bull. Herb. Boiss. II. 5: 421. 1905. 



A tree with glabrous branches, the young twigs puberulent; leaves 3-4 dm. long; petioles 

 and rachis grooved above, minutely puberulent when young, glabrous in age; leaflets 10 or 12, 

 opposite or alternate, oblong to oblong-elliptic or oblong-ovate, 10-15 cm. long, 3.5-6 cm. 

 broad, equilateral or nearly so and more or less rounded at the base, short-acuminate at the 

 apex, glabrous above, the midvein impressed, minutely puberulent to glabrous beneath, 

 short-petioluled, minutely pellucid-dotted, thin, the midvein and lateral veins prominent; 

 inflorescence raceme-like, 9-12 cm. long; flowers pedicelled, the pedicels minutely puberulent; 

 sepals suborbicular, imbricate, minutely puberulent, ciliate, not long persisting in fruit; petals 

 oblong, 6-7 mm. long, 3 mm. broad, obtuse at the apex, glabrous or with few minute, mostly 

 appressed, scattered hairs; staminal tube cup-shaped, glabrous or nearly so, the margin 

 crenulate; anthers oblong; ovary glabrous ; style glabrous; stigma orbicular; capsule globose, 

 3 cm. broad, glabrous; seeds ellipsoid or somewhat ovoid. 



Type locality: Forests of Trejos, Las Vueltas, Tucurrique, Costa Rica. 

 Distribution: Known only from the type locality. 



32. Guarea sphenophylla Urban, Symb. Ant. 7: 242. 1912. 



A shrub with grayish, glabrous branches, the young twigs angled, short-pilose; leaves 

 equally pinnate, petioled, the petioles 0.5-2.5 cm. long, channeled above; leaflets 2-6, opposite, 

 obovate or rhomboid, 2.5-5 cm. long, 1.3-2.5 cm. broad, subsessile or short-petioluled, equi- 

 lateral at the base, the apex rounded or subtruncate, coriaceous, glabrous, the nerves elevated 

 on both surfaces; inflorescence axillary, racemose, few-flowered, the branches pilose; calyx 

 4-lobed, pilose on the outside; petals 4, sericeous-pilose; anthers 8; fruit unknown. 



Type locality: Near Rincon, Barahona, Santo Domingo. 

 Distribution: Santo Domingo. 



33. Guarea rhopalocarpa Radlk. Bull. Herb. Boiss. II. 

 5: 191. 1905. 



A medium-sized tree; leaves 3-3.9 dm. long, the rachis and petioles more or less channeled 

 above; leaflets 6 or 8, petioluled, opposite, the upper elliptic, 15-20 cm. long, 6.5-8.5 cm. 

 broad, the lower leaflets smaller and often of an ovate type, all more or less acutish at the 

 base, obtusely acuminate or somewhat rounded at the apex, papillose above, glabrous on 

 both surfaces, rather obscurely punctate with curved pellucid lines and pellucid dots, the 

 midvein strongly impressed above, prominent beneath, rather finely reticulate- veined ; flowers 

 not described; capsules said to be borne in small clusters on the trunk, narrowly pyriform, 

 3-4.5 cm. long, 1.5-1.7 cm. broad, conspicuously wrinkled, finely puberulent and appressed- 

 hirsute in the grooves towards the apex and on the style which sometimes persists. (Plant 

 imperfectly known to me; the leaves resemble those of G. Chichon C. DC.) 



Type locality: Forests of Tuis, Province of Cartago, Costa Rica. 

 Distribution: Knpwn only from the type locality. 



