EUPHORBIACEAE. 231 



tinct, ovoid, parallel-contiguous; rudimentary ovary none. Female flowers 

 solitary at the base of the spike, sessile or pedicelled; calyx 3-fid; ovary 

 3-celled; styles 3, distinct or slightly connate at the base, slender, recurved- 

 spreading, entire; ovule 1 in each cell. Capsule globose; cocci 2-valved; 

 seeds globose, estrophiolate. [Commemorates Sebastian Bonani.] About G 

 species of Cuba and the Bahamas. Type species: Bonania cuhana A. Rich. 



1. Bonania cubana A. Rich, in Sagra, Hist. Cub. 11: 201, ph 68. 1850. 



Excoecaria cuhana Muell. Arg. Linnaea 32: 122. 1863. 



A much branched shrub about 2 m. high with shining leathery glabrous 

 leaves. Leaves 12-18 X 6-11 mm., ovate, obtuse, sometimes slightly emargi- 

 nate, distinctly nerved, glandular-crenate; petioles short; stipules ovate; male 

 spikes 12-16 mm. long, slender; bracts 1-3-flowered; calyx sessile, about 1 mm. 

 long, urceolate, its lobes short, entire; anthers subincluded; capsule flattened- 

 globose, smooth, slightly 3-sulcate; seed globular, grayish, 3 mm. in diameter, 

 smooth, flecked with a few minute, scarcely perceptible, yellowish markings. 



Thickets, coppices and rocky plains, Andros, New Providence, Eleuthera, Cat 

 Island, Great Exuma and Long Island : — Cuba. Boxania. 



20. HIPPOMANE L. Sp. PI. 1191. 1753. 



Trees with glabrous leaves and acrid poisonous milky juice. Leaves 

 alternate, coriaceous, with rather long petioles. Flowers in terminal monoe- 

 cious amentaceous spikes, the rachis stout, the male above the female in 

 clusters of 8-15, subtended by 2-glandular bracts; calyx membranous, 2-3- 

 lobed; stamens 2-3, exserted; filaments more or less united; anthers erect, 

 extrorse. Female flowers: calyx ovoid, 3-parted, closely surrounding the ovary 

 and furnished with several glands; ovary 6-8-celled, sessile; styles 6-8, re- 

 curved, stigmatic on the inner surface; ovules 1 in each cell, pendulous, 

 anatropous. Drupe slightly 6-8-ridged, variegated, the pulp milky, the endo- 

 carp bony, 6-8-celled; seeds elongated, flattened. [Greek, horse-poison. J A 

 monotypic genus. 



1. Hippomane Mancinella L. Sp. PI. 1191. 1753. 



An evergreen tree 4-20 m. high. Leaves shining, glabrous, thii-kish. ovate 

 or oval, 4-10 cm. long, blunt or somewhat narrowed at the base, acute or 

 short-acuminate, undulate or slightly shallow-serrate; principal veins at nearly 

 right angles to the midrib; veinlets delicately reticulate; petioles slender, 

 somewhat shorter, or at times longer, than the blades; stipules 4-S mm. long; 

 bracts broader than long, crenulate ; male calyx with 3 unequal acute lobes; 

 female calyx of ovate or orbicular sepals; drupe spheroidal when fresh, 2.5-3.5 

 cm. in diameter, yellowish; nut depressed, often bearing numerous grouped 

 thorn-like projections. 



Rocky coppices and white-lands, Abaco, Andros, Great Guana Cny. Atwood Cay. 

 Fortune Island, Inagua, Providenciales and Anguilla Islands: — Florida: Wost Indies; 

 Mexico and continental tropical America. Manchionicei.. Catesby, 2: pi. 95. 



21. GRIMMEODENDRON Urban, Symb. Ant. 5: 397. 1908. 



Glabrous trees or shrubs. Leaves alternate, petiolate, crenate-serrate. 

 Inflorescence in terminal monoecious spikes; flowers apetalous; disk none. 

 Male flowers: calyx 3-lobed or 3-fid, membranous, the lobes valvate; stamens 3; 



