3(2). Leaf blade and small basal lobes entire, neither toothed nor lobulate 



2. Phacelia 



3. Leaf blade pinnatifid or pinnately lobed, the segments toothed or lobulate 



3. Hydrophyllum 



4(1). Terrestrial herbs sometimes in wet soils; capsule unilocular, often some- 

 what divided by intrusion of placentae; style solitary but usually 

 shallowly lobed to bipartite 4. Nama 



4. Aquatic spiny herbs; capsules bilocular; styles 2, quite distinct 5. Hydrolea 



1. EUisia L. Aunt Lucy 

 Monotypic in temperate North America. 

 1. Ellisia Nyctelea L. 



Delicate annual herb; stems very slender, retrorsely hispid; leaves mostly 

 alternate, oblong to ovate, 3-8 cm. long and 1-3 cm. wide, pinnately divided 

 into 7 to 13 oblong divisions; flowers small, white or bluish, solitary or several 

 in a terminal cyme; caly.\ normally unappendaged, accrescent in fruit; corolla 

 narrowly campanulate, shorter than to about equaling the calyx; stamens included, 

 a pair of minute scales at the base of each filament; styles cleft less than one 

 third; capsule globose, usually 4-seeded, 5-6 mm. in diameter, exceeded by the 

 strongly accrescent subrotate calyx; seeds globose, regularly reticulate, without 

 an appendage. 



Damp soil, low pastureland, in wet alluvial woodlands, stream banks, weedy 

 along roadsides and in cult, land, reportedly introd. in Tex. (Denton Co.), Okla. 

 {Waterfall) and N.M. (Union Co.); from N. Y. and Pa. s. to Va., w. to Mich, and 

 Okla. and as a weed as far w. as Sask., Wyo., and N.M. 



2. Phacelia Juss. 



A polymorphic American genus of perhaps 200 species, mostly of the western 

 United States and adjacent Mexico. 



1. Phacelia heterophylla Pursh. Fig. 646. 



Biennial or short-lived perennial from a taproot, with one main stem and 

 sometimes several secondary erect or ascending stems to about 1 m. tall, usually 

 much shorter; herbage green or grayish with pubescence, the stems usually covered 

 with short loose or spreading often glandular hairs as well as spreading bristles; 

 leaves prominently veined, the lower petiolate, the uppermost ones essentially 

 sessile; blades elliptic to lanceolate and subobtuse to acute, to about 9 cm. long, 

 the upper cauline ones simple, the basal and lower cauline ones typically with 

 one or rarely two pairs of smaller lobes at base; inflorescence densely bristly and 

 short-hairy, usually elongate and narrow, somewhat virgate or sometimes openly 

 branched or short and compact; corolla dull whitish to purplish, 3-7 mm. long 

 and broad; filaments conspicuously exserted, hairy near the middle; ovules 4, 

 often with only 1 or 2 reaching maturity. P. magellanica of auth. 



Usually on dryish slopes but also in marshes and wet meadows along streams, 

 in N.M. (San Juan, Rio Arriba. Union, San Miguel, Santa Fe, Socorro, Otero and 

 Lincoln cos.) and Ariz. (Apache to Coconino, s. to Cochise and Pima cos.), Apr.- 

 Oct.; Alta. and B.C., s. to N.M., Ariz, and Calif.; S.A. 



3. HydrophyUum L. Waterleaf 



Erect pubescent to glabrate perennial herbs from horizontal rootstocks, bearing 

 fleshy-fibrous or tuberous roots; leaves basal and alternate, pinnately divided to 

 pinnatifid, the cauline leaves lobed or divided, petiolate; flowers several to many 

 in terminal open to capitate cymes, pedicellate; calyx divided nearly to the base, 



1377 



