Petunia. SOLANACE^E. 243 



shorter than the tube, not over a line and a half long, and not surpassing the capsule : 

 corolla dull white or greenish, glabrous, slender-salverform ; the tube an inch to inch and 

 a half long ; the obscurely 5-lobed or angulate limb 4 to 6 lines in diameter. Watson, Bot. 

 King, 276, t. 27, fig. 1, 2 ; Gray, Bot. Calif, i. 545. Dry ground, California and Nevada to 

 Colorado. (Guadalupe Island off Lower California, Palmer, referred to A". Bigelovii.) 



++ ++ Filaments more or less unequally inserted in the upper part of the tube of the tubular-fun- 

 nelform or salverfonn but open-mouthed white corolla, which is vespertine and open by day 

 only in dull weather: capsule thin-walled: herbage viscid-pubescent, often minutely so. 



= Ovary and ovate 4-vaIved capsule 2-celled as in all the foregoing : diameter of the limb of the 



corolla 'less than the length of the slender tube. 



N. Bigelovii, 'Watson. A foot or two high : leaves oblong-lanceolate, sessile or nearly 

 so ; the lower (5 to 7 inches long) with tapering base ; the upper (3 to 1A inches long) more 

 acuminate, with either acute or some with broader and partly clasping base : inflorescence 

 loosely racemiform, with all the upper flowers bractless : calyx-teeth unequal, linear-subu- 

 late, about equalling the tube, surpassing the capsule : tube of the corolla 1J to 2 inches 

 long, narrow, with a gradually expanded throat ; the 5-angulate-lobed limb 12 to 18 lines 

 in diameter. Bot. King, 270, t. 27, fig. 3, 4 ; Gray, Bot. Calif. 1. c. 546. N. plumbaginifolia 9 

 var. Bigelovii, Torr. Pacif. R. Rep. iv. 127. California, from Shasta Co. to San Diego, and 

 eastward to Nevada and the border of Arizona. 



Var. Wallacei, a form with corolla smaller (the tube 12 to 16 lines long), and 

 calyx-teeth shorter, but variable, sometimes hardly surpassing the capsule : upper leaves 

 more disposed to have a broad and roundish or subcordatc slightly clasping base: herbage, 

 &c., more viscid. Near Los Angeles and San Diego, Wallace, Cleveland. 



= Ovary and capsule globular, 4-several-celled, at first, somewhat succulent: the valves at 

 maturity tliin and rather membranous: corolla with ampler limb and proportionally shorter more 

 funnelform tube. Polydiclia, Don. Pvlydiclis, MILTS. 



N. quadrivalvis, Pursh. A foot high, rather stout, more or less viscid-pubescent, low- 

 branching : leaves oblong or the uppermost lanceolate, and the lower ovate-lanceolate, 

 acute at both ends, mostly sessile (3 to 5 inches long); the lowest larger and petioled : 

 flowers few : calyx-teeth much shorter than the tube, about equalling the 4-celled (or 

 sometimes 3-celled? ) capsule : tube of the corolla barely an inch long, the 5-lobed limb an 

 inch and a half or more in diameter ; its lobes ovate and obtusish, veiny. Sims, Bot. Mag. 

 t. 1778 ; Lehm. Nicot. 45, t. 4 ; Nutt. Gen. i. 132 ; Gray, Bot. Calif. 1. c. Poli/diclis quadri- 

 valvis, Miers, 111. i. 164, & ii. 55, 60, fig. 2-14. Oregon, and cultivated by the Indians from 

 Oregon to the Missouri : their most prized tobacco-plant. Perhaps a derivative of the 

 preceding species. 



Var. multivalvis, Gray, 1. c. An abnormal form of cultivation (by aborigines), 

 generally stouter, with calyx, corolla (often over 2 inches wide), and stamens 5-8-merous, 

 and capsule several-celled, sometimes an inch in diameter. N. multivalvis, Lindl. Bot. Reg. 

 t, 1057. Polijdiclis multivalvis, Miers, 1. c. t. 60, fig. 1 & 9. Oregon, probably known only 

 as an escape from aboriginal cultivation. 

 N. NANA, Lindl. Bot. Reg. t. 833, Nierembergia nana, Miers, must be Hcsperochiron Californicus. 



15. PETtJNIA, Juss. (Petun is an aboriginal name of Tobacco.) - - Viscid 

 South American herbs, with entire leaves, the upper disposed to become opposite, 

 and scattered flowers becoming lateral : two large-flowered species and their 

 hybrids familiar in gardens ; an inconspicuous small-flowered one is a naturalized 

 weed, and perhaps indigenous along the southern borders of the U. S. It forms a 

 peculiar section, and has received several generic names. 



P. parviflora, Juss. A small prostrate or diffusely spreading annual, much branched, 

 more or less pubescent : leaves oblong-linear or spatulate, rather fleshy, seldom half an 

 inch long, nearly sessile : peduncles very short : calyx-lobes resembling the smaller leaves : 

 corolla purple with a pale or yellowish tube, 4 lines long, funnelform ; its short retuse lobes 

 slightly unequal: capsule small, ovoid. Juss. in Ann. Mus. ii. 216, t. 47 ; Miers, 111. i. 

 t. 23 ; Dunal. 1. <:. 575. Nicotiana pam flora, Lehm. Nicot. 48. Lindernia Montevidensis, 

 Spreng. Collibrarhna prornmbens, Llav. & Lex. Nov. Mex. Veg. ii. 3. Salpiyhssis prostratn, 

 Hook. Am. Bot. Beech. 123. Leptophragma prostmtu, Benth. mss. ex Dunal, 1. c. 578. 



