In swamps, marshes, about ponds and margins of streams throughout Tex. and 

 Okla. to Ariz. (Apache, Gila, Maricopa, Pinal and Pima cos.), June-Sept.; from 

 Fla. to Mex., n. to e. Can., N.Y. and w. to Calif. 



Those plants with branchlets and at least the lower leaf surfaces soft-pubescent 

 are segregated as var. pubesccns Raf., while those with short-petioled narrower 

 leaves arranged in whorls of three are segregated as var. californicus Benth. 



2. Cephalanthus salicifolius H. & 6. 



Shrub or small tree, the branches reddish-brown, glabrous; stipules 2-3 mm. 

 long, deltoid, acute or acuminate, often with marginal glands, glabrous; leaves 

 opposite and ternate, the stout petioles to 4 mm. long, glabrous, narrowly oblong 

 to elliptic-oblong or lanceolate, to 12 cm. long and 23 mm. wide, acute to sub- 

 cordate at the base, rounded and apiculate to long-attenuate at the apex, glabrous 

 or sparsely pilose beneath along the veins, bright-green above, lustrous; peduncles 

 mostly simple, 2-4 cm. long, glabrous, the heads 6-8 mm. in diameter, the 

 receptacle very densely setose; calyx and hypanthium 2-2.5 mm. long, densely 

 white-sericeous with short hairs; calyx 1 mm. long or shorter, shallowly 4- or 

 5-dentate, densely pilose within, the lobes minute, rounded, often glanduliferous; 

 corolla 6-7 mm. long, glabrous outside, the lobes oblong or ovate, sparsely pilose 

 within, often with black glands in the sinuses; capsule 4-5 mm. long, densely and 

 minutely sericeous; seeds brown, with a large white aril. 



Wet soil in and about ponds, springs and along resacas, in Hidalgo Co., 

 extreme s. Tex., Mar.-July; from s. Tex. to s.-cen. Mex., also Hond. 



5. Mitchella L. Partridge-berry 

 Two species, the other Japanese. 



1. Mitchella repens L. Two-eyed berry, running box. 



Small glabrous trailing evergreen herbs forming appressed mats of indefinite 

 size; leaves petioled, opposite or ovate to orbicular, rounded to cordate at base, 

 obtuse at apex, shining, pinnately veined and sometimes variegated with whitish 

 lines, 15-25 mm. long; stipules triangular-subulate; peduncle short, terminal, bear- 

 ing 2 flowers at its summit; flowers fragrant, white, often tinged with purple, 

 in pairs with their ovaries united, occasionally 3- to 6-merous, always dimorphous, 

 all flowers of some individuals have exserted stamens and included stigmas, all 

 flowers of other individuals with included stamens and exserted style; calyx 4- 

 toothed; corolla tube about 13 mm. long, densely bearded inside, surpassing the 

 oblong spreading lobes; style 1 ; stigmas 4, linear; drupes edible, 4-6 mm. in 

 diameter, bright-red or rarely white (f. leucocarpa Bissell), overwintering, 

 crowned with the calyx teeth of the 2 flowers, with 4 small seedlike bony nutlets 

 to each flower. 



On dry or moist knolls in woods, sandy banks of streams, among sphagnum 

 moss, sandy bogs, low moist woodlands, in e. Tex. and s.e. Okla., May-July; 

 from Fla. to Tex., n. to e. Can., Ont. and Minn. 



6. Spermacoce L. Buttonweed 



Low spreading annual or perennial herbs; leaves opposite, their bases or 

 petioles connected by a bristle-bearing stipular membrane; flowers small, whitish 

 to purplish-blue, crowded into sessile axillary and terminal whorled clusters or 

 heads: calyx tube short, obovoid, the limb parted into 4 teethlike lobes; corolla 

 funnel form or salverform, 4-lobed, valvate in the bud: stamens 4, inserted on the 

 corolla tube; ovary 2-celled; ovules one in each cavity; style slender, the stigma 

 2-cleft; fruit a dry capsule, sessile, coriaceous or somewhat crustaceous, sometimes 

 didymous, splitting when ripe into 2 carpels, one of the carpels usually carrying 



1551 



