922 SPIGELIACEAE 



ovate, 1.5-9 cm. long, entire, dark green, acute, or acuminate, short-petioled : flowers on 

 short scaly pedicels : calyx-lobes ovate or ovate-lanceolate, 3-4 mm. long, acutish or ob- 

 tuse : corolla deep yellow : capsules elliptic, oblong or ovoid, 1-1.5 cm. long, marked with 

 a conspicuous suture on each flat side, veiny : seeds obliquely-oblong, 5-6 mm. long, 

 strongly papillose, each prolonged into a hyaline wing 5 mm. long with a toothed end. 

 In sandy soil, Virginia to Florida and Texas, x^^lso in Mexico and Central America. Spring. 



2. COELOSTYLIS T. & G. 



Caulescent herbs. Leaves opposite : blades entire. Flowers in the forks of leafy 

 brandies, or axillary to leaves. Calyx-lobes narrow. Corolla white or whitish, salver- 

 form : limb plaited in the bud, the edges turned outward. Stamens 5, included, adnate to 

 the corolla tube. Ovary 2-celled : styles permanently united, included, jointed near the 

 middle. Fruit didymous. 



Corollas 12-14 mm. long : species of Florida. 1. C. loganioides. 

 Corollas 8-10 mm. long: species Texano-Mexican. 



Scabrous : capsules lineolate : calyx-lobes with erose-denticulate margins. 2. C. Lindheimeri. 



Smooth : capsules smooth : calyx-lobes with scabrous margins. 3. C. Texana. 



1. Coelostylis loganioides T. & G. Annual or perennial, glabrous, dull green. 

 Stems ascending, 1-3 dm. tall, sometimes branched at the base, rather wiry : leaf-blades 

 leathery, oval, elliptic or lanceolate, 1.5-3.5 cm. long, obtuse or acute, conspicuously 

 nerved : flowers wiiite, solitary in the axils of the leaves or three in terminal clusters : 

 calyx-lobes narrowly linear, long-pointed, the margins scarious and denticulate : corolla 

 narrowly funnelform, 1 cm. long ; lobes lanceolate or acutish, about j as long as the tube. 



In sandy soil, eastern Florida. 



2. Coelostylis Lindheimeri (A. Gray) Small. Annual, low, tufted, puberulent, pale 

 green. Stems diflrisely branched from the base, somewhat scabrous, the branches 1-2 dm. 

 long, branched throughout: leaf -blades lanceolate or oblanceolate, or those of the branches 

 often oblong-spatulate, 1-3 cm. long, obtuse or acute, even slightly apiculate, slightly 

 revolute, ciliolate, more or less narrowed at the base, the lower short-petioled : flowers 

 terminal and axillary : calyx slender ; lobes linear, 4 mm. long, scarious-margined and 

 erose-denticulate, persistent and at length twisted : corolla funnelform, 1 cm. long ; lobes 

 ovate, 2-5 mm. long, obtuse : capsule 2-lobed, 4 mm. high, 5 mm. broad, longitudinally 

 marked with distinct lines : seeds dark brown or black, 2 mm. in diameter, tuberculate and 

 pitted. [Spigeha Lindheimeri A. Gray.] 



On dry prairies, western and southern Texas to New Mexico, and northern Mexico. 



3. Coelostylis Texana T. & G. Annual, glabrous, slender, dark green. Stems 

 simple or sparingly branched from the base, 3-4 dm. tall, branched above : leaf-blades lan- 

 ceolate, ovate-lanceolate or elliptic, 3-5 cm. long, thinnish, acute, ciliolate, narrowed at 

 the base, sessile or very short-petioled : stipules triangular : flowers terminal or axillary on 

 the upper branches : calyx-lobes linear-subulate, 3 mm. long, the margin scabrous : corolla 

 8 mm. long, funnelform ; lobes narrowly ovate, acutish, more than twice shorter than the 

 tube : capsule 5 mm. broad, 3 mm. high, smooth and glabrous, somewhat 2-lobed : seeds 

 dark brown, 1 mm. in diameter, minutely rugose and punctate. 



In dry soil, eastern Texas. 



3. SPIGELIA L. 



Annual or perennial herbs, rarely somewhat shrubby. Stems often branched, mainly 

 from the base. Leaves opposite, subtended by small inconspicuous caducous stipules : 

 blades entire. Flowers often showy, in terminal spikes or spike-like racemes. Calyx 

 slender : tube often bearing 5 or more glands within at the base : lobes narrow. Corolla 

 tubular or funnelform : lobes 5, their edges barely turned outward. Stamens 5, often with 

 exserted anthers, adnate to the corolla-tube. Ovary 2-celled : style jointed near the base. 

 Ovules numerous in each cavity, densely attached to peltate placentae. Fruit 2-celled, 

 borne on a cup-shaped base. 



Annual : inflorescence subtended by a whorl of bracts larger than the leaves. 1. S. anthelmia. 

 Perennial : inflorescence not subtended by a whorl of bracts. 



Corolla scarlet without, 4-5 cm. long : anthers and style exserted. 2. 5. Marylandica. 



Corolla white or purplish without, 1.5-2.5 cm. long : anthers and style included. 3. S. gentianoides. 



1. Spigelia anth61mia L. Annual, deep green. Stem 1-4 dm. tall, often branched : 

 leaf-blades lanceolate, 3-12 cm. long, finely ciliolate, acute or slightly acuminate, paler 



