GENUS 2. 



WATER-LEAF FAMILY. 



67 



2. NEMOPHILA Nutt. Journ. Phil. Acad. 2 : 179. 1822. 



Annual diffuse pubescent slender and fragile herbs, with alternate or opposite mostly 

 pinnatitid or lobed leaves. Flowers white, blue or variegated, solitary, peduncled, lateral or 

 terminal. Calyx deeply 5-cleft or 5-parted, with a reflexed or spreading appendage in each 

 sinus. Corolla campanulate or rotate-campanulate, mostly longer than the calyx, usually 

 with 10 small appendages within at the base, the lobes convolute in the bud. Stamens included ; 

 anthers ovate or oblong. Ovary i-celled with placentae similar to those of Hydrophyllum; 

 styles partly united; ovules 2-12 on each placenta. Capsule 2-valved. Seeds 1-4. [Greek, 

 grove-loving.] 



About 10 species, natives of North America, mostly Calif ornian. Type species: Nemophila 

 phacelioides Nutt. 



i. Nemophila microcalyx (Nutt.) F. & M. 

 Small-flowered Nemophila. Fig. 3488. 



Ellisia microcalyx Nutt. Trans. Am. Phil. Soc. (II.) 5 : 



191. 1833-37. 

 Nemophila microcalyx F. & M. Sert. Petrop. pi. 6, 1846. 



Stems very slender, diffuse, branched, 2'-! 5' long. 

 Leaves membranous, petioled, i'-24' long, pinnatifid 

 or pinnately divided into 3-5 obovate cuneate or 

 oblique, obtuse 2-3-dentate or -lobed, approximate or 

 confluent segments, the upper all alternate, the lowest 

 opposite; peduncles slender, 4"-! 2" long, opposite 

 the leaves, shorter than or equalling the petioles; 

 flowers white or blue, i4"-2" long; appendages in 

 the sinuses of the calyx minute ; calyx scarcely en- 

 larged in fruit ; ovules 2 on each placenta ; corolla- 

 appendages obsolete or none ; anthers oval ; capsule 

 about 1 4" in diameter, much longer than the calyx, 

 i-2-seeded. 



In woods, Virginia to Florida, west to Arkansas and 

 Texas. April-June. 



3. NYCTELEA Scop. Introd. 183. 1777. 



[MACROCALYX Trew, Nov. Act. Nat. Cur. 2 : 330-332. pi. 7. f. i. Hyponym. 1761.] 



[ELLISIA L. Sp. PI. Ed. 2, 1662. 1763. Not Syst. Ed. 10, 1121. 1759.] 

 Annual hirsute or pubescent branching slender herbs, with opposite or alternate, pin- 

 nately divided or i-3-pinnatifid leaves, and solitary or racemose small white or bluish flowers. 

 Calyx 5-lobed or 5-parted, spreading, much enlarged in fruit, destitute of appendages in the 

 sinuses. Corolla campanulate or nearly cylindric, shorter than or slightly exceeding the calyx, 

 usually with 5 minute appendages on the tube within, its lobes convolute or imbricated in the 

 bud. Stamens included; anthers oval or oblong. Ovary i-celled ; styles united below; ovules 

 2-4 on each of the placentae, which are similar to those of the two preceding genera. [Name 

 unexplained.] 



About 3 species, natives of North America, the fol- 

 lowing typical. 



i. Nyctelea Nyctelea (L.) Britton. 

 Nyctelea. Fig. 3489. 



Ipomoea Nyctelea L. Sp. PI. 160. 1753. 

 Polemonium ( ?) Nyctelea L. Sp. PI. Ed. 2, 231. 1762. 

 Ellisia Nyctelea L. Sp. PI. Ed. 2, 1662. 1763. 

 Macrocalyx Nyctelea Kuntze, Rev. Gen. PI. 434. 

 1891. 



Sparingly hirsute-pubescent; stem several times 

 forked, 4'-i2' high. Leaves pinnately divided, 

 petioled, 2'-4' long, ovate-oblong in outline, the 

 upper alternate, the lower opposite, the segments 

 oblong or lanceolate, dentate, entire or lobed; 

 peduncles slender, i-flowered, opposite the leaves; 

 calyx in flower about 2" long, about equalling 

 the corolla, enlarging, widely spreading and be- 

 coming 8"-i4" broad in fruit, its lobes lanceolate 

 or ovate-lanceolate, acuminate ; fruit at length 

 pendulous ; capsule globose, 2"-3" in diameter. 



In moist soil, New Jersey to Minnesota, Saskatche- 

 wan, Virginia, Nebraska and Kansas. April-July. 



