Boschniahia. OROBANCHACE^. 585 



* * Flowers mainly sessile, croivded in a simple or branching spike : lobes of the 

 corolla short and less spreading: calyx deeply 5-cleft into linear -lanceolate divisions, 

 2-bracteolate. 



5. A. Ludovicianum, Cray. More pubescent, a span to a foot liigli : calyx 

 about liiilt' the lenytli of the dull purple or sometimes yellowish corolla : anthers 

 (before opening) glabrous or slightly wooUy. — Orobanche Liuloviciana, Nutt. Gen. 

 ii. 58. Phelixxxa Ludoviciana, Walp. ; lieuter, 1. c. 



Near Fort Mohave, Cooper. Thence through New Mexico to Texas, Illinois, and Minnesota. 

 "Rootstock bitter, but eaten by the Mohaves." Corolla barely three fourths of an inch loii" : 

 upper lip occasionally entire : calyx often rather irregular. ° 



A. MULTIFLORUM, Gray {nruJ,„,i,-hr i,i,iJf; flora, Nutt. PI. Gamb. 179, & Phdipim erianthera, 

 Engelm.), of Arizona and ^■r\v .M, xi,-,,, whirl, resembles the preceding species, has larger Howers, 

 the lower ones more or less pttlicellcd, Lmgrr calyx-lobes, and veiy woolly anthers. It may also 

 reach California. 



* * * Flowers mainly sessile, in a panicle or thyrsoid cluster, small, at most half an 

 inch long : calyx '2-bracteolate ; its lobes rather short : corolla xvith short and hardly 

 spreading lobes : anthers glabrous or nearly so : stems from a thick and firm tuber- 

 ous base. 



6. A. tuberosum, Gray. Minutely puberulent, low and stout, the thickened 

 base with hrm imbricated scales : flowers in a compact cluster : calyx unequally 

 cleft, a little shorter than the yellowish corolla. — Phelipaea tuberosa, Gray, Proc. 

 Am. Acad. vii. 371. 



Sandy soil on dry ridges, Gavilan Mountains east of Itlonterey, Brewer. Specimens mainly in 

 fruit. 



A. Yi-^-ETonvu,Gmy {PhdipcBa innetorrim, Gray, 1. c, and Orohanchc pinetorum, Geyer in Hook. 

 Kew Jour. Bot. iii. 297), of the Columbia River region, another species of this section, has more 

 tapering stems and a looser panicle, often a foot high, and equal calyx-lobes rather shorter than 

 its tube. 



2. BOSCHNIAKIA, C. A. Meyer. 



Calyx short and cupshaped, oblicpie, or the upper side truncate, the lower side 

 with about 3 distant teeth : no bractlets at its base. Corolla ventricose ; the upper 

 lip erect or somewhat arched and entire ; the lower 3-parted, sometimes very short. 

 Stamens somewhat protruded : anthers blunt at base. Seeds with a thin and retic- 

 ulated coat. — Short and stout simple stems from a tuberous base, thickly beset 

 with scales, glabrous throughout ; the flowers in a dense scaly spike, yelloAvish or 

 brownish. — Bongard, Veg. Sitcha, 158. 



B. GLABRA, C. A. Meyer, the original species (which is figured in Hooker's Flora Bor.-Am.), 

 inhabits Siberia and the high northern parts of this continent. It is remarkable for the ex- 

 tremely short lower lip to the corolla. 



B. HooKEKi, Walp. (figm-ed by Hooker as Orobanche tuberosa), known only by a sjjccimen 

 collected by Menzies on the N. W. Coast, must be near the following, but has short and blunt 

 calyx-teeth and narrow bracts to the spike. 



1. B. strobilacea, Gray. A span high, thick and stout, with broad and 

 rounded dark-lnown scales overlying one another, so as to resemble a spruce-cone, 

 floriferous from near the base : calyx truncate-entire on the posterior side, on the 

 anterior with 3 linear-subulate teeth longer than the tube : lower liji of the corolla 

 as long as the upper, of 3 oblong spreading lobes : filaments strongly l)earded at 

 base : placentoe 4, equidistant. — Pacif. R. Eep. iv. 1 1 8. 



On dry steep hills of the South Yuba, Bigclow. Sta. Lucia Mountains, ])arasitic on i-oots of 

 Manzanita, Brewer. "Scales brownish-red with light margins : corolla striped with white and 

 brownish-red." 



