STYRACACEJi. (STORAX FAMILY.) 309 



Order 61. STYRACACEJE. (Storax Family.) 



Shrubs or trees, with alternate simple leaves destitute of stipules, and per- 

 fect regular flowers ; the calyx either free or adherent to the 2-o-celled 

 ovary ; the corolla of 4 - 8 petals, commonly more or less united at the base ; 

 the staynens twice as many as the petals or more numerous, monadelphous or 

 polyadelphous at the base ; style 1 ; fruit dry or drupe-like, 1 -h-celled, the cells 

 commonly l-seeded. — Seeds anatropous. Embryo nearly the length of the 

 albumen : radicle slender, as long as or longer than the flat cotyledons. 

 Corolla hypogynous when the calyx is free : the stamens adherent to its 

 base. Ovules 2 or more in each cell. — A small family, mostly of warm 

 countries, comprising two very distinct tribes, which are sometimes sepa- 

 rated as suborders or orders. 



Tribe I. STYRACEiE. Calyx 4-8-toothed or entire. Stamens 2-4 times as many 

 as the petals : anthers linear or oblong, adnate, introrse. Ovules or part of them ascending, 

 — Flowers white, handsome. Pubescence soft and stellate. 



1. Styrax. Calyx coherent only with the base of the 3-celled ovary. Corolla mostly 5, 



parted. Fruit l-celled, l-seeded. 



2. Halesia. Calyx coherent with the whole surface of the 2 -4-celled ovary, which is 2 - 4, 



winged and 2 - 4-celled in fruit. Corolla 4-lobed. 

 Tribe II. SYMPLOCINE.3E. Calyx 5-cleft. Stamens usually very numerous : an- 

 thers short, innate. Ovules pendulous. — Flowers yellow. Pubescence simple. 



3. S yinploc os. Calyx coherent. Petals 5, united merely at the base. 



1. STYRAX, Tourn. Storax. 



Calyx truncate, somewhat 5-toothed, the base (in our species) coherent with 

 the base of the 3-celled many-ovuled ovary. Corolla 5-parted (rarely 4-8- 

 parted), large ; the lobes mostly soft-downy. Stamens twice as many as the 

 lobes of the corolla : filaments flat, united at the base into a short tube : anthers 

 linear, adnate. Fruit globular, its base surrounded by the persistent calyx, 

 l-celled, mostly l-seeded, dry, often 3-valved. Seed globular, erect, with a hard 

 coat. — Shrubs or small trees, with commonly deciduous leaves, and axillary or 

 leafy-racemed white and showy flowers, on drooping peduncles ; produced in 

 spring. Pubescence scurfy or stellate, (r/ 2rvpa£, the ancient Greek name of 

 the tree which produces storax.) 



1. S. grandif61ia, Ait. Leaves obovate, acute or pointed, white-tomentose 

 beneath (3'- 6' long) ; flowers mostly In elongated racemes ; corolla (J' long) convo- 

 lute-imbricated in the bud. — Woods, Virginia and southward. 



2. S. pulverulenta, Michx. Leaves oval or obovate (about 1' long), 

 above sparingly puberulent, and scurfy-tomentose beneath; flowers (£' long) 1-3 to- 

 gether in the axils and at the tips of the branches, fragrant. — Low pine barrens, 

 Virginia (Pursk) and southward.— Shrub l°-4° high. 



3. S. Americana, Lam. Leaves oblong, acute at both ends (1 - 3' long), 

 smooth, or barfly pulverulent beneath ; flowers axillary or in 3-4-flowered racemes 

 ($> long) ; corolla valval* in the bud. (S. glabrum and S. laeve, Ell.) — Mar- 

 gin of swamps, Virginia and southward. — Shrub 4° - 8° high. 



