to the base of the corolla; anthers linear-oblong; ovules 4 in each cell; fruit large 

 and dry, bony within; seeds single, cylindrical. 



A few species found in North America and China. 



1. Corolla lobes shorter than the tube; fruit 4-winged 1. H. Carolina. 



1. Corolla lobes longer than the tube; fruit 2-winged 2. H. diptera. 



1. Halesia Carolina L. Carolina silver-bells, o'possum-wood. 



Large shrubs or small tree to about 12 m. tall; leaves broadly ovate to elliptic 

 or obovate. to 15 cm. long and 8 cm. wide, acute to acuminate, serrulate; flowers 

 in clusters of 2 to 5, with slender pedicels to 15 mm. long; calyx 5-6 mm. long; 

 corolla to 2 cm. long; filaments and styles glabrous; fruit 2.5-4 cm. long, ellip- 

 soid to ellipsoid-obovoid, short-beaked. 



In rich woods and along stream banks in e. Tex. and s.e. Okla. {Waterfall), 

 Apr.-May; from Fla. to Tex. {fide Small), n. to Va., W.Va., s. O., s. Ind., s. III., 

 s.e. Mo. and Okla. 



2. Halesia diptera Ellis. Snowdrop-tree. Fig. 617. 



Small tree or shrub to 8 m. tall; leaves elliptic to obovate or sometimes ovate, 

 rounded to cuneate at base, abruptly acute to acuminate at apex, when mature 

 essentially glabrous, to 15 cm. long and 9 cm. wide, rather coarsely toothed; flow- 

 ers with pedicels about 1 cm. long; calyx 3-4 mm. long, pubescent; corolla 1.5-2 

 cm. long, copiously pubescent; petals broadly elliptic, obtuse; filaments and style 

 pubescent; fruit 3.5-5 cm. long, narrowly ellipsoid, prominently beaked. 



Woods and along streams or edge of swamps, in e. Tex. and (?) s.e. Okla. 

 {Waterfall), Mar .-Apr.; from n. Fla. n. to S.C, w. to Tex. and Ark. 



2. Styrax L. Storax. Silver Bells 



Shrubs or small trees with deciduous leaves and axillary or leafy-racemed white 

 and showy flowers on drooping peduncles; calyx somewhat 5- to 7-toothed and 

 sometimes glandular at truncate apex; petals soft-downy; stamens twice as many 

 as the corolla lobes; filaments flat, united at the base into a short tube; anthers 

 linear; fruit dry. often 3-valved; seeds globular, erect, with a hard coat. 



Over 130 species found in warm regions of North America and Eurasia. 



1. Leaves characteristically broadly elliptic to obovate; distribution in east Texas 

 1. S. americana. 



1. Leaves characteristically suborbicular to broadly ovate; distribution in central 

 Texas 2. S. platanifolia. 



1. Styrax americana Lam. Mock-orange. Fig. 618. 



Shrub or small tree to 6 m. tall; leaves elliptic to obovate, tapering to base, 

 more or less abruptly acute to short-acuminate at apex, to 13 cm. long and 8 cm. 

 wide, subglabrous to pulverulent or somewhat scurfy on lower surface, the margins 

 (especially above the middle) irregularly serrulate to serrate-sublobulate; flowers 

 axillary or in several-flowered racemes to 7 cm. long, the racemes subglabrous to 

 scurfy-canescent, the pedicels usually about 5 mm. long; calyx puberulent; corolla 

 lobes valvate to somewhat convolute in bud, elliptic to elliptic-oblanceolate, obtuse 

 to acute at apex, to 15 mm. long and 5 mm. wide; capsule subglobose, about 1 cm. 

 long, apiculate. Incl. f. pulverulenta (Michx.) Perkins, S. pulveridenta Michx. 



In moist woods, swampy areas and along streams in e. Tex. and s.e. Okla. 

 (McCurtain Co.), Apr.-May; from Fla., w. to Tex., n. to s.e. Va., s. Ind., s.e. 

 Mo., Ark. and Okla. 



2. Styrax platanifolia En gel m. 



Shrub or small tree to 4 m. tall, much-branched; leaves more or less pubescent 

 with stellate hairs, rarely subglabrous, strongly reticulate-veined, broadly ovate 

 to suborbicular, with the margins undulate to angulate or occasionally sinuately 



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