CORRIGIOLACEAE 401 



1. Anychiastrum hemiarioides (Miclix.) Small. Annual or biennial, scabrous- 

 pubescent. Steins branched at the base, the branches spreading, 2-15 cm. long, forking, 

 often numerous: leaves numerous; blades oblong to oval, 3-10 mm. long, mucronate, 

 ciliate, sessile ; stipules acuminate : calyx bristly pubescent : sepals ovate, becoming 2 

 mm. long, slightly hooded, minutely cuspidate : utricle conspicuously swelling the base of 

 the c;<lyx at maturity. [Pcwouychia hemiarioides (Michx. ) Kutt. ] 



In sandy soil, often on sand hills, North Carolina to Florida. 



2. Anychiastrum Baldwinii (T. & G. ) Small. Annual or biennial, slender, 

 minutely pubescent. Stems branched at the base, the branches prostrate, 1-4 dm. long, wiry, 

 usually forked, sometimes filiform : leaves rather numerous ; blades narrowly oblong or 

 linear-elliptic, 8-20 mm. long, acute, ciliolate, sessile or nearly so ; stipules linear-lanceo- 

 late, 2-6 mm. long : sepals oval, about 1 mm. long, sligiuly hooded, 3-ridged, ciliate, 

 each abruptly narrowed into a short cusp : utricle equalling the sepals in length or slightly 

 surpassing them. \_Paron\jehia Bakhvinii (T. & G. ) Chapm.] 



In sandy soil, Georgia to Louisiana and Florida. 



3. Anychiastrum riparium (t'hapm. ) Small. Perennial, very slender, glabrous or 

 nearly so. Stems sparingly branched at the base, the branches prostrate, wire-like, o-12 dm. 

 long, widely forking ; branchlets filiform : leaves few ; blades oblong or linear-elliptic, 

 5-12 ram. long, acute, scarcely paler beneath than above, sessile ; stipules short, soon 

 lacerate : cynuiles open, terminating filiform branchlets : sepals ovate, about 1 mm. long, 

 slightly hooded, minutely cuspidate, glabrous : utricle obovoid, about as long as the sepals. 

 [FavonycJda riparia Chapm.] 



In dry sand, along or near the Flint River, southwestern Georgia. 



3, ANYCHIA Wichx. 

 Annual herbs, with slender forking stems. Leaves opposite : blades narrow or some- 

 what dilated. Flowers solitary or clustered in the forks. Calyx persistent. Sepals 5, 

 greenish, distinct, barely mucronate on the back, nearly flat. Stamens 2-3, or rarely 5, 

 included : filaments inserted at the base of the ovary. Styles very short : stigmas spread- 

 ing. Utricle nearly as long as the calyx or exserted. Seed erect. The plants flower in 

 the summer. Forked Chickweed. 



Foliage glabrate : sepals oblong : utricle surpassing the calyx. 1. A. Canadensis. 



Foliage pubescent : sepals ovate : utricle nearly as long as the calyx. 2. A. dichotoma. 



1. Anychia Canadensis (L. ) B.S. P. Annual, deep green, glabrous. Stems erect 

 or ascending, 0.5-4 dm. tall, simple below, forking above, the branches filiform : leaf-blades 

 thinnish, oblong to elliptic, 0.5-2 cm. long, obtuse or acutish, short-petioled : cymes open : 

 calyx nearly 1 mm. long : sepals oblong, obtuse, sliglitly white-margined, hooded at the 

 apex: utricle subglobose, slightly surpassing the calyx: seed lenticular, 1 mm. broad. 

 [^A. dichotoma var. capillacea Torr.] 



In open Avoods and on hillsides, Ontario to Minnesota, Massachusetts, Georgia and Arkansas. 



2. Anychia dichdtoma Michx. Annual, pale green, minutely jjubescent. Stems 

 erector decumbent, 0.5-3 dm. long, forking, the branches often densely dis})osed, wiry : leaf- 

 blades thickish, oblanceolate or linear-elliptic, 0.5-1.5 cm. long, acute, sessile or nearly 

 so : cymes rather dense : calyx 0.8-0.9 mm. long : sepals ovate, acute, 3-ribbed, green, 

 hooded at the apex : utricle obovoid, flat-topped, shorter than the calyx. 



In dry soil, Maine to Minnesota, Florida, Alabama and Arkansas. 



4. ODONTONYCHIA Small. 



Perennial caulescent herbs, with glaucous or finely pubescent foliage. Stems com- 

 monly tufted, erect or assurgent, corymbose above. Leaves opposite : blades somewhat 

 fleshy, narrow. Flowers in dense terminal corymbose cymes. C:ilyx sessile, not urn- 

 shaped. Sepals 5, about as long as the hypanthium, erect, paler than the hypanthium. 

 Stamens 5, included : filaments inserted on the margin of the hypanthium. Styles united 

 to near the apex. Urticle included. The plants flower from spring to fall. 



Foliage glaucous : hypanthium glabrous : sepals lanceolate or oblong-lanceolate. 1. O.erecta. 



Foliage pubescent : hypanthium pubescent : sepals oblong or ovate-oblong. •>. O.coritmbom. 



1. Odontonychia ereota (thapra. ) Small. Perennial, stout, glaucous. Stem 



branched at the base, the brandies tufted, erect, ascending or slightly decumbent, 1-4 dm. 



tall, usually simple below, forked above : leaf-blades linear, linear-oblanceolate, or the 



upper oblong, 1-3 cm. long, obtuse or acute, erect or ascending, sessile ; stijiules silvcrv. 



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