Vol. III.] WATERLEAF FAMILY. 49 



g. Phacelia fimbriata Michx. Fringed or Mountain Phacelia. (Fig. 3010.) 



Phacelia fimbriata Michx. Fl. Bor. Am. 1: 134. 1803. 



Annual, sparingly pubescent; stems simple or 

 branched, ascending or diffuse, 6 / -2o / long. Basal 

 and lower leaves slender-petioled, i'-&/ long, pin- 

 nately divided into 5-9 orbicular obovate or oblong 

 obtuse dentate or entire segments; upper leaves 

 sessile, their segments oblong or lanceolate, acute; 

 clusters loose, 3-1 2- flowered; pedicels \"-\$ ,f 

 long; flowers 4 // -5 // broad, white; calyx-segments 

 linear to spatulate, obtuse; corolla rotate-cam- 

 panulate, not appendaged within, its lobes strongly 

 fimbriate; filaments pilose, about equalling the 

 corolla; ovules 2 on each placenta ; capsule de- 

 pressed-globose, 2 // in diameter. 



In woods, mountains of Virginia to Alabama. 

 May-June. 



5. NAMA L. Sp. PI. 226. 1753. 

 [Hydrolea L. Sp. Pi. Ed. 2, 328. 1762.] 

 Perennial herbs, some tropical species shrubby, with alternate entire leaves, sometimes 

 with spines in their axils, and blue cymose-clustered or racemose flowers. Calyx-segments 

 distinct to the base, ovate or lanceolate. Corolla rotate-campanulate, not appendaged 

 within, 5-cleft, the lobes imbricated in the bud. Stamens inserted on the base of the corolla; 

 filaments filiform, dilated below; anthers sagittate. Ovary 2-celled (rarely 3-celled); ovules 

 numerous in each cavity, on fleshy adherent placentae; styles 2, rarely 3, slender or filiform, 

 distinct to the base; stigma capitellate. Capsule globose or ovoid, septicidally or irregularly 

 dehiscent. [Greek, a stream, referring to the habitat.] 



About 15 species, natives of warm and tropical regions of both the Old World and the New. 

 Besides the following, another occurs in the southern United States. 



Leaves lanceolate; flowers mostly in axillary clusters. 



Glabrous, or very nearly so, throughout; sepals ovate to ovate-lanceolate. 1. N. affinis. 



Villous, at least above, and on the calyx; sepals lanceolate. 2. N. quadj'ivalvis. 



Leaves ovate; flowers mostly in terminal clusters; sepals villous. 3. X. ovata. 



i. Nama affinis (A. Gray) 



Kuntze. Smooth Nama. 



(Fig. 301 1.) 



Hydrolea affinis A. Gray, Man. Ed. 5, 370. 



1867. 

 Xama affinis Kuntze, Rev. Gen. PI. 435. 1891. 



Glabrous or very nearly so throughout, 

 with or without slender spines in the 

 axils; stems ascending, i-2}4 high. 

 Leaves oblong-lanceolate, petioled, acute 

 or acuminate at both ends, 2 / -5 / long, 

 \"-W wide; flowers 6 // ~7 // broad, short- 

 pedicelled, in rather dense peduncled 

 leafy-bracted axillary clusters; sepals 

 ovate, or ovate-lanceolate, acute or acumi- 

 nate, about equalling the corolla; capsule 

 2" in diameter when mature, somewhat 

 longer than the styles, shorter than the 

 sepals. 



In wet places, southern Illinois to Mis- 

 souri, Louisiana and Texas. June-Aug. 



