BORRAGINACE.E. 431 



little or not at all hispid, or papillose-hispidulous on some of the lower leaves : 

 small-flowered. 



* Typical, with an annular caruncle mere]}' bordering a deep circular excavation, which is a kind 

 of false umbilicus: this suggested the name for the genus. 



P. rufescens, Fischer & Meyer, 1. «j. Often a foot high, with slender stems from the tuft 

 of spatulate-lanceolate radical leaves, only the young hirsute pubescence of the inflorescence 

 and calyx rufescent : spikes elongated and sparsely flowered at maturity, naked, or with a 

 leaf or two at base : fructiferous calyx lax, 3 lines long, of linear-lanceolate nearly distinct 

 sepals : nutlets (a line long) little incurved, broadly ovate and short-acuminate, rather ob- 

 compressed, lightly carinate on the back and margined, reticulate-rugose and muriculate, the 

 circular carunculate-bordered ventral pit about half a line in diameter. — Gray, Proc. Am. 

 Acad. xx. 282. Myosotis alba, Colla (PI. Bertero, 88), fide A. DC. M.fulva, Hook. & Arn. 

 Bot. Beech. 38, not of 369. Eritrlchium fulvum, A. DC. Prodr. x. 132; Gray, Proc. Am. 

 Acad. xvii. 226. — W. California, from near the Oregon line, Howell, to Colusa and El 

 Dorado Co., Mrs. Layne-Curran, and Sacramento Co., Nevin, perhaps not very uncommon, 

 and perchance introduced (from Chili). 



* * Solid-carunculate, that is, the caruncle of the more incurved and ventrally concave nutlets 

 forming a broadish (commonly transverse) wen-shaped or short tongue-shaped caruncle: gyno- 

 base small and depressed. 



-i— llature nutlets abruptly contracted at base and apex, so as to become cruciately 4-lobed, 

 vitreous-crustaceous and more-or less lucid, transversely lineate-rugose on the back with straight 

 and broadish wrinkles separated by very narrow impressed lines, and running from the low 

 median crest to the somewhat crested margins : calyx deeplj- 5-cleft, persistent, or at length im- 

 perfectly circumscissile ; lobes broadly lanceolate, villous with rufescent or soon pale or f ulvous 

 pubescence: plants small and erect, a span high or little more. 



P. tenellus, Gray, 1. c, is Eritrlchium tenellum, p. 192, with syn. and habitat. Nutlets a 

 line long, muriculate-roughened. Herbage gives a violet stain to paper. — Extends from 

 Brit. Columbia and W". Idaho to S. California. 



P. Shastertsis, Greene. Perhaps only a larger-flowered form of the foregoing, with calyx 

 (3 lines long) more closed over the fruit, and nutlets (a line and a half long) smooth or 

 barely the margins muriculate-roughened. — Gray, 1. c. 284. 



•f— -K- Nutlets broadly ovate and not at all cruciform, 



++ Vitreous-crustaceous but rather dull, lineate-rugose in the manner of the preceding, but the 

 flatter back hardly at all carinate : calyx not circumscissile : plant diffusely procumbent, hispidu- 

 lous, with short oblong leaves which commonly extend through the irregular spikes. 



P. Torreyi, Gray, 1. c, is Eritrlchium Torreyl, p. 192. Herbage gives an abundant violet 

 stain to paper. 



++ ++ Nutlets opaque, not vitreous nor much indurated, the back slightly carinate, rugose with 

 sparse and somewhat reticulated lines, which are elevated above the general surface, this often 

 minutely granulate. 

 = Calyx divided to near the base: spikes irregular or simple, commonly leafy below: limb of 

 corolla only a line or two in diameter: plants diffusely branched from the base, a span to a foot 

 high. 

 P. AxizonicUS, Greene. Hirsute or even hispid with widely spreading hairs, not canes- 

 cent : leaves mostly oblong-lanceolate : fructiferous calyx not over 2 lines long, usually con- 

 nivent over the acutely rugose and sparingly roughened nutlets, at length circumscissile at 

 base. — Gray, 1. c. Eritrlchium canescens, var. Arizonicum, Gray, Proc. Am. Acad. xvii. 

 227. — Common in Arizona, S. Utah, and adjacent parts of California, Palmer, Greene, Lem- 

 mon, Parish, Pringle. 



Var. Catalinensis has fructiferous calyx open and the broader lobes somewhat 

 accrescent ; also duller as well as rougher nutlets — Santa Catalina Island, off Los Angeles, 

 California, Lyon. 

 P. canescens, Benth., is Eritrlchium canescens, p. 192. Villous-pubescent and somewhat 

 cinereous or canescent, especially the calyx, which when young may be fulvous or even 

 somewhat rufescent : this 2 or 3 lines long in fruit, loosely erect or sometimes more open 



