Sabatia 



Gentianaceae 



755 



~~ 30 



Map 1617 



Spigelia manlandica L. 



50 



Map 1618 



Sabatia angularis (L.) Pursh 



246. GENTIANACEAE Dumort. Gentian Family 



Leaves simple, sessile, opposite or whorled or if scalelike sometimes some of them 

 alternate. 

 Plants not filiform; leaves not scalelike. 



Plants less than a meter tall; leaves not in whorls. 

 Lobes of corolla much more than half as long as the tube. .6494. Sabatia, p. 755. 

 Lobes of corolla not more than half as long as the tube. 



Flowers pink to rose purple; styles usually deciduous; anthers twisted 



6496. Centaurium, p. 756. 



Flowers blue, greenish white or yellowish; styles persistent; anthers not 

 twisted. 

 Plants not more than 16 cm tall; basal leaves reduced to scales; corolla 



lobes imbricated in bud 6502. Obolaria, p. 756. 



Plants more than 16 cm tall; basal leaves not reduced to scales; corolla 



lobes convolute in bud 6509. Gentiana, p. 757. 



Plants more than a meter tall; leaves mostly in whorls of 4. .6512. Frasera, p. 760. 



Plants filiform; leaves scalelike 6501. Bartonia, p. 756. 



Leaves 3-foliolate; petioles alternate 6543. Menyanthes, p. 760. 



6494. SABATIA Adans. Rose Gentian 



Branches opposite. 



Leaves cordate-clasping; stem strongly 4-angled 1. S. angularis. 



Leaves linear and linear-oblong, sessile; stem slightly 4-angled. (See excluded species 



no. 494, p. 1080) S. brachiata. 



Branches alternate, rarely one opposite; plant diffusely branched at maturity; leaves 



linear or the lowest lance-linear; calyx lobes setaceous, as long as the corolla lobes. 



2. S. ca/mpanulata var. gracilis. 



1. Sabatia angularis (L.) Pursh. Map 1618. In Indiana this plant has 

 two distinct habitats. In the lake area, including our Henry County speci- 

 men, all of our specimens with one exception were found on the moist 

 sandy or peaty borders of lakes and swamps. In 1938 I found it to be a 

 common plant on an open, pastured black and white oak ridge a half mile 

 northwest of Disko, Fulton County. In the southern part of the state this 

 species is frequent to common in hard, dry, clay soil in old fallow fields, 



