520 BORRAGTNACE^. Coldenia. 



10. Pectocarya. Niillcls diver^'nnt iiiul horizontal in pairs, oblong, somewhat boat-slia|.o(l hy 



ti wiiig-likd toiiUicil or puclinutu liiudrr, wliiih buars inoru or less hook-tiinied biisLlus. 

 Klowcis vi'iy sniiill, wliilo, scattcmi along lealy branches. 



♦ ♦ Fortilo niilldt invcsliul by two united and iMirniito-appendagi'd divisions of the very uiieqnal 

 calyx ; tlio oLliora storilu : seed oreul and radicle interior ! 



11. Harpagonella. Kmclircrous iiortiou of tlio ealyx bur-liko, about 7-horncd, the horns or 



processes armed with hooked bristles. l''lowcrs very small, scattered along the lealy stem 

 and branches. 



1. COLDENIA, Linn. 



Calyx 5-partL'd or (lei'i)ly O-clel't (or in one species 4-parted). Corolla .shovt- 



funneltbrm or salverlonu ; tiro lobes rounded and usually between convolute and 



imbricated in the bud (one lobe wholly exterior). Anthers oval. Style 2 -cleft or 



2-parted : stigmas small, capitate. Ovary more or less 4-lobed, in fruit forming 



4 or fewer one-seeded nutlets. .Seeds tlestitute of albumen : cotyledons thick. — 



Low herbs or sull'rutescent plants, with mostly white small flowers in sessile 



terminal and lateral clusters. — DC. I'rodr. ix. 558 ; Gray, Proc^ Am. Acad. v. 



340, viii. 292, »k x. 48. I'tquUia, Pers. (Jalapmjoa, Hook. f. St<'yuocarpus, 



Piilocalyx it Kddi/Uy 'I'orr. & Cray, Pacif. Iv. Ivep. ii. IGi). 



Tho original speciea is Kast Indian and also widely dispersed ovor the warmer parts of tho 

 world ; the sections i:>lc<jnoc(tr/nis and I'lilucalij.c, and also Eddya, inhabit tho southern borders 

 of tho United States from Arizona or New Mexico eastward (one of them C. hispidissima, 

 which has naiTow and excessively hispid leaves, &c., may approach the eastern borders of our 

 State) ; the section Tiquilia consists of two Western South American species ; and finally ours 

 form the section Tiquiliopsis, characterized by scales or plaits at the base of the corolla- 

 tube, and cotyledons either horseshoe-shaped and surrounding or else entire and incumbent on 

 the radicle. 



1. C. Nuttallii, Hook. Annual, prostrate and many times forked, hoary-pubes- 

 cent and sparingly hi.spid : leaves ovate or roundish, about 2 lines long and on 

 petioles of equal or greater length, marked with 2 or 3 strong veins on each side of 

 tho midrib: Howers densely clustered in the forks of the stem: lobes of the 5-parted 

 calyx linear, sparsely hispid, eijualling the tube of the pinkish or white corolla : 

 hlaments shorter than the iinthers, inseited iiigh uj) on the corolla-tube, at the base 

 of wliich within are 5 very short adnate scales : stylo almost 2-parted : nutlets ob- 

 long-ovate, smooth and shining, rather thin, marked with a linear ventral scar : 

 embryo straight : cotyledons elongated horseshoe-form, the 4 long basal lobes almost 

 enclosing the long radicle. — l>enth. in Kew Jour. Bot. iii. 296 ; A^'^atsoJl, liot. 

 King Kxp. 248. Ti<jiiii/i<i. hreri folia, Nutt. in herb.; Torr. Hot. Mox. iiound. i3(), 

 k Hot. Wilkes Exp. xvii. 411, t. 12 A. 



Arid plains, along the eastern borders of the State {Anderson, Torrey, &c.), extending through 

 the arid interior district from Washington Territory to Arizona, and eastward to Wyoming 

 Territory. 



2. C. Palmeri, Cray. Perhaps perennial and slightly woody at base, whitened 

 with a line and close i)ubescence, not hispid : branches ascending : leaves obovato 

 or ovate, 2 to 4 lines long and witli shorter petioles, strongly marked or lineate Ijy 

 about G pairs of straight veins : lobes of tho 5-cleft calyx lanceolate, about half tho 

 length of the tube of tlie (bluish) corolla, which bears 5 salient plaits extending 

 upwards (piite to the base of tlie slender lilaments : nutlets only one or two ripen- 

 ing, these globular and with a round scar : cotyledons entire and thick, incumbent 

 on the radicle! — Proc. Am. Acad. vii. 292, & x. 49; Watson, liot. King Exp. 

 247. Tiquilia brevifolia, var. plicala, Torr. Bot. JMex. Bound. 136. 



Sand-hills, alon^ the Rio Colorado and the lower part of the Mohave, and adjacent parts of 

 Arizona, Cooper^ Emory, Scholt, Palmer. Mr. Watson found evident albumen ; but in mature 

 seeds there is merely a trace. 



