910 SAPOTACEAE 
usually obtuse. Stamens mostly 5, included, adnate to the base of the corolla-lobes or on 
the tube opposite the lobes: anthers opening lengthwise. Staminodia scale-like, or peta- 
loid, entire or toothed. Ovary 5-celled or rarely 2—4-celled : style variable. Berry ovoid 
or subglobose. Seed mostly solitary, with a crustaceous often shining testa. Endosperm 
fleshy. Embryo central. Mastic. WILD OLIVE. 
1. Sideroxylon mastichodéndron Jacq. A massive tree, sometimes 25 m. tall, 
with a maximum trunk diameter of about 1.5 m. Leaf-blades leathery, oblong to oval 
or rarely ovate, 4-15 cm. long, obtuse or short-acuminate at both ends, undulate, bright 
green and lustrous above, yellowish green and dull beneath, becoming glabrous ; petioles 
slender, commonly 3 as long as the blade or longer: pedicels 4-7 mm. long: calyx gla- 
brous ; sepals suborbicular, about 2 mm. long: corolla 6-7 mm. broad, light yellow ; lobes 
5, oblong or ovate-oblong, obtuse : staminodia lanceolate, long-acuminate, 1 mm. long: 
stamens about as long as the petals: drupes oval, nearly 2.5 cm. long, yellow: seed 
obovoid, smooth: pulp rather dry, somewhat acid. 
In hammocks, southern peninsular Florida and the Keys. Fall and spring. 
3. DIPHOLIS A. DC. 
Unarmed shrubs or small trees. Leaves alternate. Flowers in axillary or lateral 
clusters. Sepals 5, ovate to suborbicular, strongly imbricated, nearly equal. Corolla-lobes 
5, furnished with 2 appendages at each sinus. Stamens 5, adnate to the corolla-tube, oppo- 
site the lobes, exserted : filaments filiform: anthers opening lengthwise. Staminodia 5, 
petaloid, commonly acuminate, keeled. Ovary 5-celled, somewhat 5-lobed, glabrous: 
style elongated. Berry ovoid or oblong, fleshy. Seed usually solitary, with a leathery 
testa. Endosperm fleshy. Embryo somewhat lateral. Bustic. CassaDA. 
1. Dipholis salicifdlia (L.) A. DC. An evergreen tree, sometimes 16 m. tall, with a 
maximum trunk diameter of about 5-dm. Leaf-blades leathery, elliptic or elliptic-ob- 
lanceolate, 5-12 cm. long, usually acute at the apex, entire, acuminate at the base Into 
slender petioles, glabrous and lustrous above, dull and glabrous or rarely pubescent 
beneath : pedicels stout, enlarged upward, 2-3 mm. long: calyx pubescent; sepals ovate 
or oblong, 1.5 mm. long, obtuse: corolla 4 mm. broad ; lobes oblong or oval, rounded at 
the apex, about as long as the tube: staminodia ovate or ovate-lanceolate, laciniate- 
toothed : appendages at least 3 as long as the corolla-lobes: berries subglobose or oval, 
about 8 mm. in diameter, black. 
In hammocks, southern peninsular Florida and the Keys. Alsoin the West Indies. Spring. 
4. BUMELIA Sw. 
Shrubs or small trees, with a milky or gummy sap and a very hard wood. Leaves 
alternate, their axils sometimes spine-bearing : blades sometimes conspicuously or promi- 
nently nerved. Flowers mostly perfect, few or many in axillary clusters. Calyx long- 
pedicelled or nearly sessile, persistent. Sepals unequal, strongly imbricated. Corolla 
white, deciduous : lobes longer than the tube, with an appendage on each side. Stamens 
5, adnate to the corolla-tube : anthers versatile. Staminodia 5, petal-like. Ovary 5-celled, 
pubescent. Ovules 5. Berry drupe-like. Seed mostly solitary, erect. Endosperm want- 
ing or nearly so. The plants flower in spring and summer. BUCKTHORN. 
A. Leaf-blades glabrous, or merely with scattered hairs or inconspicuously cobwebby beneath. ., . 
Fruit oblong-cylindric. d : A 1. B. angustifolia. 
Eo Dd or oval. n aal 
eaf- es of an obovate or spatulate type, mainly broadest above the middle. 
Twigs copiously pubescent with deep red hairs. 2. B. rufotomentoes- 
Twigs glabrous or soon becoming so. 
Fruit less than 8 mm. long. ;^rocarpa. 
Corolla-lobes about 1.5 mm. long: leaf-blades blunt: fruit5mm.long. 3. B. d ree : 
Corolla-lobes about 2 mm. long: leaf-blades retuse: fruit6-7 mm. long. 4. B. rechnatd. 
Fruit over 9 mm. long. acocca. 
Leaf-blades 1-3.5 em. long: fruit over 10 mm. broad. 5. B. meg : 
Leaf-blades 4-10 em. long : fruit less than 10 mm. broad. s: 
EA EUN TUDIN : staminodia serrulate: sepa 6. B. cassinifolia. 
Corolla-lobes entire: staminodia entire: sepals pubescent. 7. B. monticola. 
Leaf-blades of an elliptic type broadest at the middle. Tezana 
Pedicels and sepals pubescent. 8. B. i 
9. B. lucida. 
Pedicels and sepals glabrous. : 
Corolla3 mm. long ; lobes as broad as long : leaf-blades not reticulated. 
Corolla 4 mm. long; lobes longer than broad: leaf-blades copiously cioides. 
retieulated. 10. B. ictor 
