172 HYDROPHYLLACE^. Tricardia. 



conspicuous, sessile in the forks, fully half inch long : corolla purple, funnelform, with 

 rather long narrow tube and ample limb : calyx-lobes filiform-linear, not widening upward, 

 hispid with long spreading hairs : stamens unequally inserted : style 2-cleft at the apex, 

 sometimes only slightly so : ovules about 20 : seeds usually fewer ; the testa thin and 

 translucent, smooth, or in age obscurely and sparsely excavated. — Bot. King, 256 ; Gray, 

 Proc. Am. Acad. x. 329, & Bot. Calif, i. 585. Eutoca aretioides, Hook. & Arn. Bot. Beech. 

 374; Hook. Ic. t. 355. E. ? [Conanthus] aretioides, A. DC. Prodr. ix. 295. Nama demissa, 

 Gray, Proc. Am. Acad. viii. 283, in part. — Through the dry interior region, from Oregon 

 to Arizona along the eastern borders of California. Style and filaments sometimes long 

 and sometimes short in different plants, but not reciprocally so. 



8. THICARDIA, Torr. (From tqi- three, and xagdia, heart, referring to 

 the shape of the three larger sepals.) Sepals thin; the three exterior much 

 enlarging after flowering, becoming somewhat scarious and finely reticulate-veiny. 

 Corolla with the 10 narrow internal appendages free and rather distant from the 

 filaments. — A single (Nevadan) species : — 



T. W^atsoni, Torr. Perennial herb, branched from the base ; the ascending stems a 

 span high, pubescent with long and soft cottony hairs, more or less glabrate with age : 

 leaves all alternate, glabrate, entire ; the radical and lower cauline spatulate-lanceolate, an 

 inch or two long, and tapering into a conspicuous margined petiole; the upper much 

 smaller, short-pctioled or sessile and more oblong : flowers rather few, loosely racemose : 

 short pedicels in fruit recurved : corolla purplish, about 3 lines wide, moderately' 5-lobed: 

 stamens and style included : larger sepals of the fruiting calyx becoming two-thirds of an 

 inch long and wide, strongly cordate, much longer than the ovate pointed incompletely 2- 

 cellcd capsule : ovules 4 to each placenta : " seeds a line long, oblong, sliglitly roughened." — 

 Watson, Bot. King, 258, t. 24. — Western Nevada, at Truckee Pass, Watson. Rio Virgen, 

 S. Utah, Parry. 



9. ROMANZOFFIA, Cham. (Dedicated to Count Nicholas Romanzoff, 

 the promoter of Kotzebue's voyage, in which the original species was discovered.) 

 — Low and delicate perennial herbs, with the aspect of Saxifrage ; the leaves 

 mainly radical, all alternate, round-cordate or reniform, crenately 7-11-lobed, long- 

 petioled ; the lobes gland ular-mucronulate. Scapes or flowering stems a span or 

 less in length, racemosely or sometimes paniculately several-flowered ; the pedicels 

 filiform. Calyx-lobes oblong-linear or lanceolate. Corolla j^ale pink or purple, 

 varying to white, delicately veiny. Ovary and refuse capsule 2-celled or nearly 

 so: the placentaj narrowly linear, many-seeded. Seeds oval: the testa alveolate- 

 reticulated. 



R. Unalaschkensis, Cham. Loosely somewhat pubescent : rootstock not tuberifer- 

 ous : scape erect, 3 to 5 inclies high ; the erect or ascending pedicels shorter than the flow- 

 ers : calyx-lobes herbaceous, a little shorter than the very short-f unnelform corolla and 

 equalling or surpassing the capsule : style sliort. — Cham, in Hor. Phys. Berol. 71, t. 14; 

 Chois. Hydrol. t. 3; Gray, Proc. Am. Acad. x. 3:30. Saxifraga nutans, Don. — Unalaska and 

 adjacent islands, Chamisso, Nelson, Harrimjton, DaU, &c. 



R. Sitchensis, Bongard. Slightly and sparsely pubescent or glabrate : slender root- 

 stocks tuberif erous : scapes filiform, weak, a span long ; the spreading pedicels longer than 

 the flowers : calyx-lobes very glabrous, nnich sliorter than tlie funnelform corolla, and 

 shorter than the capsule : style long and slender. — Veg. Sitk. 41, t. 4 ; Torr. in Pacif. R. 

 Rep. iv. t. 25 ; Hook. Bot. Mag. t. 6109 ; Gray, 1. c. — Sitka to the coast range of California, 

 as far south as Redwoods occur, viz. to Monterey Co. 



10. HESPEROCHlRON, S. Watson. (Hesperus, evening, used for 

 western, and Chiron, a Centaur distinguished for his knowledge of plants, i. e. 

 Western Centaury, the plant having been supposed to' belong to the Gentian 



