BoscTiniaUa. OROBANCHACE^. 313 



* * Flowers nearly sessile or the lower ones short-pedicelled, simply spicate or thj'rsoid : calyx 

 bibracteolate, deeply 5-cleft into linear-lanceolate lobes : upper lip "or all the lobes of the more 

 tubular corolla less spreading: whole plant viscidly pruinose-puberulent. 



A. multifldrtim, Gray, 1. c. A span or two high : calyx almost 5-parted, fully half the 

 length of the ample' (inch or more long) purplish corolla: anthers very woolly. — Orobanche 

 multiflora, Nutt. PL Gamb. 179. Phelipoea Ludoviciana, Torr. Bot. Mex. Bound. 110, in part. 

 P. erianlhera, Engelm. in Proc. Am. Acad. vii. 372. — Gravelly plains and pine woods, 

 W. Texas, New Mexico, and S. Colorado, to Arizona. (Adjacent Mex.) 



A. Ludovicianum, Gray, 1. c. Rather less pubescent : spikes more frequently com- 

 pound: calyx less deeply and somewhat unequally 5-cleft: corolla about half smaller; 

 upper lip sometimes almost entire: anthers (before dehiscence) glabrous or nearly so. — 

 Orobanche Ludoviciana, Nutt. Gen. ii. 58. Pkelipaa Ludoviciana, Walp. 1. c. ; Reuter in DC. 

 1. c. — Illinois and Saskatchewan to Texas, thence west to Arizona and the south-eastern 

 borders of California. (Adjacent Mex.) 



* * * Flowers subsessile or short-pedicelled, thyrsoid-paniculate, small, otherwise nearly as in 

 the preceding section: stems with a thickened tuber-like squamose base: anthers glabrous: 

 corolla yellowish, half inch long. 



A. tuberosum. Gray, 1. c. Pruinose-puberulent, seldom a- span high : short and dense 

 spikes corymbose-glomerate at the summit of the tliick stem : calyx-lobes lanceolate, longer 

 than the tube. — Phelipoea tuberosa, Gray, Proc. Am. Acad. vii. 371. — Dry ridges, Califor- 

 nia, from Monterey to San Diego, and San Bernardino Co., Brewer, Palmer, Parry. 



A. pinetorum, Gray, 1. c. More pubescent : stem rather slender above the large tuber- 

 ous base, a span to a foot high: flowers in a rather loose elongated panicle: calyx-lobes 

 subulate from a broad base, not longer than the tube. — Orobanche pinetorum, Geyer in 

 Hook. Kew Jour. Bot. iii. 297. — Oregon to British Columbia, on the roots of Fir-trees. 



3. CONOPHOLIS, Wallr. Squaw-root. (Kcivoi;, cone, and (folig, scale, 

 the young plant, clothed with the imbricated dry scales and bracts, not unlike a 

 slender Fir-cone.) — Single species. 



C. Americana, Wallr. Glabrous, simple, 3 or 4 and in fruit becoming 6 to 10 inches 

 long, as thick as the thumb, light chestnut-colored, and with yellowish flowers : scales at 

 first rather fleshy, at length firm-chartaceous. — Orobanch. 78 ; Endl. Iconogr. t. 81. Oro- 

 banche Americana, L. f. Suppl. 88. — Oak woods, in clusters among decaying fallen leaves. 

 New England to Michigan and Florida : fl. summer. (Mex.) 



4. BOSCHNIAKIA. C. a. Meyer. (In memory of Boschniahi, a Rus- 

 sian botanist.) — Short and thick, simple-stemmed from a tuberous caudex, brown, 

 glabrous, scaly ; the sessile flowers each subtended by a scaly bract nearly equal- 

 ling the corolla ; the whole forming a mostly dense cylindrical spike. W. N. 

 American, E. Asian and Himalayan : fi. summer. 



* Calyx-teeth short and broad : placentae 2: scales (acutish) and corolla-lobes somewhat ciliate. 



B. glabra, C. A. Meyer. A span to a foot high : scales ovate : anterior calyx-tooth 

 larger : lower lip of the ovoid ventricose corolla almost obsolete : filaments merely gland- 

 ular at base. — Bong. Veg. Sitka, 158, where the genus was first described. Orobanche, &c., 

 Gmel. Sibir. iii. 216, t. 46. 0. Rossica, Cham. & Schlecht. in Linn. iii. 132. 0. (Bosch.) 

 glabra, Hook. Fl. ii. 92, t. 167. — Aleutian Islands and east to Slave Lake. (Japan, 

 Siberia.) The reference in DC. Prodr. to E. United States and Mexico was an oversight. 



B. Hookeri, Walp. Smaller : scales oblong, rather sparse : spike short : lower lip of 

 the oblong corolla fully half the length of the upper ; its lobes ovate-oblong : filaments 

 bearded at base. — Rep. iii. 479 ; Reuter in DC. 1. c. 39. Orobanche tuberosa, Hook. Fl. ii. 92, 

 t. 168. — N. W. Coast, Menzies : not since seen. 



* * Calyx-teeth linear-subulate and longer than the tube: scales very broad and obtuse: pla- 

 centas 4, equidistant. 



B. strobilacea, Gray. A span high or less, stout and thick, brownish-red, flowering 

 almost from the base : scales much imbricated, orbicular and round-obovate : lower lip of 



