BORRAGINACE.E. 431 



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

 small-flowered. 



* T\pical, with an annular carinicle merely bordering a deep circular excavation, which is a kind 

 of false umbilicus: tiiis suggested tlie name for llie genus. 



P. rufescens, Fischer & Mever, 1. c. Often a foot high, with slender stems from the tuft 

 of spatuLate-lauceolate radical leaves, only the yonng hirsute jiuliescence of the inflorescence 

 and calvx 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- 

 coin])ressed, lightly c.arinate 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. Mi/osotis alba, Colla (PI. Eertcro, 88), fide A. DC. M.falva, Hook. & Arn. 

 Bot. Beech. 38, not of 369. Eritrichium fu/cuiii, A. DC. Vrodv. x. 132; Gray, Proc. Am. 

 Acad. xvii. 226. — W.California, from near tiie Oregon line, Ilowell, to Colu.sa and Kl 

 Dorado Co., Mrs. Lniine-Cnrran, and Sacramento Co., Ntoin, perhaps not very uncommon, 

 and perchance introduced (from Chili). 



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

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

 base small and depressed. 



H— Mature nutlets abruptly contracted at base and apex, so as to become cruciately i-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 deeply 5-clert, persistent, or at length im- 

 perfectly circuniscissile; lol)cs broadly lanceolate, villous with rufescent or soon pale or fulvous 

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



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

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

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



P. Shastensis, 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. 



4— -I— 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- 

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

 P. Torreyi, Gray, 1. c, is Eritrichiuni Torre iji, p. 192. Herbage gives an abundant violet 

 stain to paper. 



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

 sparse and somewhat reticidated lines, which arc 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 onlv a line or two in diameter: jjlants diffusely branched from the base, a span to a foot 

 high. 



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

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

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

 base. — Gray, I.e. Eritn'cldum caite.scrns, var. Arizonlcum, (Jray, Proc. Atn. Acad. xvii. 

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

 mori, Parish, Pr'nKjIe. 



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

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

 California, Ayon. 



P. CaneSCenS, Benth., is Eritrirhium cnnesrens, p. 192. Villons-pubescent and somewh.it 

 cinereous or canescent, especiall}' 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 



