BURSERACK^. (tORCH-WOOB FAMILY.) 67 



eided ; filaments 4-5, densely villous below the middle, longer than the style in 

 the sterile flowers, shorter in fertile ones. — Rocky banks, Florida and northward. 

 May and June. — Shrub 4° -8° high. Leaflets 2' -4' long. Fruit 1' wide. 



2. P. mollis, M. A. Curtis. "Lateral leaflets oval, the terminal ob- 

 ovate, with an abrupt acute point, the under side, with the petioles, panicles, and 

 young branches, clothed with a soft whitish silky villus ; cymes compact, with 

 short branches ; style long ; filaments equalling the anthers." — Low country 

 of North and South Carolina {Curtis). — Leaves smaller and more rigid than 

 in No. 1, the style twice as long. Stamens 4. 



3. P. Baldwinii, Torr. & Gray. Leaves very small, glabrous ; leaflets 

 sessile, oval, obtuse, the terminal one cuneiform at the base ; flowers tetrandrous ; 

 style none. — East Florida. — Shrub 1° hiprh, with numerous short and scraggy 

 branches. Leaflets 1' long. Flowers smaller than in No. 1. 



Order 35. SIMARUBACE^. (Quassia Family.) 



Trees or shrubs, with bitter milky juice, pinnate exstipulate alternate 

 and dotlt'.sa leaves, and regular hypogynous perfect or polygamous flowers. 

 — Calyx 4 - 5-parted or 4 - 5-toothed, persistent. Petals 4-5, deciduous. 

 Stamens as many or twice as many as the petals, inserted on a hypogy- 

 nous disk. Ovary composed of 4 - 5 distinct or united carpels, with a sol- 

 itary anatropous suspended ovule in each. Fruit drupaceous, 1-sceded. 

 Seeds with a membranaceous coat. Albumen none. Radicle superior, 

 included in the cotyledons. 



1. SIMABITBA, Aublct. Quassia. 



Flowers monoecious or dioecious. Calyx 4 - .5-toothed. Petals 4-5, spread- 

 ing. Stamens 8 - 10, with the filaments inserted on the back of a ciliato scale. 

 Ovaries 4-5, surrounded by 8-10 scale-like rudiments of stamens. Styles con- 

 nivent ; the stigmas spreading. Drupes 1-5. — Trees. Leaves abruptly pin- 

 nate, with alternate and entire leaflets. Flowers small, greenish, in lateral and 

 terminal panicles. 



1. S. glauca, DC. Smooth throughout; flowers dioecious; stigmas 5, 

 subulate, spreading ; leaflets 4-8, alternate and opposite, coriaceous, obovate or 

 oblong, obtuse, paler beneath ; drupe oval, mostly solitary. — South Florida. — 

 A lai-ge tree. 



Order 36. BURSERACEiE. (Torch-Wood Family.) 



Trees or shrubs, with resinous juice, unequally pinnate or trifoliolate 

 commonly dotted leaves, and small regular flowers in axillary or terminal 

 ra<;emes or panicles. — Calyx free from the 1 - 5-celled sessile ovary, 

 2 - 5-lobed, persistent. Petals 2-5, alternate with the calyx-lobes, and 



