258 NORTH AMERICAN FLORA [Volume 25 



A tree, 10-20 meters high with a trunk up to 50 cm. in diameter ; young branches 

 clothed with a reddish puberulence, very soon glabrate ; leaflets 3-9, large, 7-12 cm. long, 

 lanceolate, thickish, acuminate, entire ; inflorescence paniculate, as long as the leaves or 

 shorter ; calyx cup-shaped, the lobes small ; corolla 2 mm. long, at first puberulent out- 

 side, but soon glabrate; lobes of the corolla about half the length of the tube, inflexed ; 

 ovary glabrous; stigma sessile; drupes large, 2-3 cm. broad, glabrous. 



Type locality : Hispaniola. 

 Distribution : Cuba to Guadeloupe. 



Illustrations: Sw. Fl. Ind. Occ. pi. 13; Tussac, Fl. Ant. 4 : pi. 30; Baillon, Hist. PI. 5: 

 /. 284-293; Gaertn. Fruct. pi. 109. 



2. Tetragastris panamensis (Engler) Kuntze, Rev. 

 Gen. 107. 1891. 



Hedwigia panamensis Engler, Bot. Jahrb. 1 : 42. 1880. 



A tree S-13 meters high with a trunk 3 dm. in diameter and a widely spreading top ; 

 branches grayish; leaflets 9-11, 6-10 cm. long, oblong-elliptic, acuminate, inflorescence 

 short, with appressed reddish hairs; pedicels 1-2 mm. long; corolla 3 mm. long, puberu- 

 lent without ; lobes of the corolla much shorter than the tube, inflexed at the tip ; ovary 

 glabrous; drupes 2 cm. broad, much broader than high. 



Type locality' : Panama. 



Distribution : Panama. 



Illustrations: Mart. Fl. Bras. 12 2 : pi. 60 (as Hedwigia balsamifera) . 



Doubtful species 



Hedwigia mexicana DC. Prodr. 2 : 80. 1825. This species is known only from a poor 

 illustration (Moc. & Sesse\ Calq. Dess. pi. 204), and the indications are that it is not a 

 Tetragastris. 



3. DACRYODES Vahl, Skr. Nat. Selsk. 6 : 115. 1810. 



Large trees. Leaves coriaceous, compound, once-pinnate; leaflets entire. Inflores- 

 cence a panicle, axillary, much shorter than the leaves, polygamous. Calyx cup-shaped, 

 subtruncate. Petals 3, distinct, valvatein the bud, thick, ovate. Stamens 6. inserted at the 

 base of the disk; filaments short, flat. Disk a thick ring. Style short; stigma flat. Ovary 

 3(? (-celled. Fruit oblong, 1-celled, 1-seeded. 



Type species, Dacryodes e.xcclsa Vahl. 



1. Dacryodes excelsa Vahl, Skr. Nat. Selsk. 6 : 117. 1810. 



Amyris hexandra Hamilt. Prodr. 34. 1825. 



Bursera acuminata DC. Prodr. 2 : 78. 1825. Not B. acuminata Willd. 1806. 



Dacryodes hexandra Griseb. Fl. Brit. W. Ind. 174. 1859. 



Pistac ia occidentalis Baillon, Adansonia 9 : 181. 1874. 



Pachylobus hexandrus Engler, in E. & P. Nat. Pfl. 3* : 243. 1896. 



A tree 3-5 meters or even 25 meters high ; bark on trunk gray, roughened ; leaflets 

 5-7, oblong, entire, acuminate; panicle about 1 dm. long; pedicels 2-4 mm. long; calyx 

 1 mm. long; petals 2 mm. long; fruit 2.5 cm. long, smooth. 



Type locality : Porto Rico. 

 Distribution : Porto Rico to Grenada. 



Illustrations: DC. Monog. Phan. 4: pi. 3, f. 39-44; Contr. U. S. Nat. Herb. 8: */. 34; 

 E. & P. Nat. Pfl. 3* : /. 13S, F-K. 



4. ICICA Aubl. PI. Guian. 1 : 337. 1775. 



Trees. Leaves large, coriaceous, compound, pinnate ; leaflets 3-7, large, entire. 

 Inflorescence paniculate, axillary, usually many-flowered. Flowers perfect and poly- 

 gamous. Calyx 4- or 5-lobed. Petals 4 or 5, distinct, valvate in the bud. Stamens 8 or 

 10. Ovary 3- to 5-celled. Fruit tardily dehiscent. 



Type species, Idea heptaphylla Aubl. 



Leaflets always 3 ; lateral nerves few (about 5). 1. /. fragrans. 

 Leaflets 5-7 ; lateral nerves numerous. 



Flowers sessile. 2. I . sessiliflora . 



Flowers not sessile. 



