584 OROBANCHACE^i. Aphyllon. 



1. APHYLLON, Mitchell. Canceh-root. 

 Calyx 5-cleft or 5-piiiUMl, regular or nearly so. Corolla luoro or less tubular and 

 curvoil, cither uhuost regular or bilabiate. Stamens included : cells of the anther 

 deeply separated IVoin hdow upwaril, niucronato at baso. Stylo long : stigiua disk- 

 shaped and pelLaLe, or umro or less bilaniellar ; the lobes anterior and posterior. A 

 double placenta or a pair of contiguous placenta) on the middle of each valve of the 

 capsule. Low and commonly viscid-pubescent or glandular, pale or brownish in 

 hue, some with slender naked scai)cs or peduncles, others with spicate llowers : 

 corolla purplish or yellowish. — Gray, Man. Bot. ed. 1, 290, ed. 5, 323; Benth. & 

 Hook. Gen. PL ii. 983. Atioplanihus § Euanoj^lon, Endl., Renter in DC. Prodr. 

 xi. 41, with species of Phelipoea. 



A Nortli American genus, to wliich must be added two or three species w]uch had been referred 

 to Phelijjcvii iis that genua liud been understood. The original Phelipaui, on the other hand, is 

 more like the original Ajjltijllon in habit. 



§ 1. Scapes or peduncles naked, long and slender, from a loosely scaly rootstock or short 

 ascending stem, and no hractlets at the base of the Globed calyx : corolla with 

 an almost regular and equally spreading b-lobed border. — True ArnYLLON. 



1. A. uniflorum, Gray, 1. c. Scapes few aiul barely a span high from a nearly 

 subterranean sIkuL ronLslock : lobes (if the ctdyx longer than its tube, subulate : 

 corolla (about an inch long) bluish-jjurple or })urplish. — I'acif \i. liep. iv. 118. 

 Orobanche unijiora, Linn. 



Parasitic on roots of various plants, not rare in California, and north to British Columbia, east 

 to tho Atlantic. Flowers vernal, with the odor of violets. 



2. A. fasciculatum, Gray, 1. c, IMore pubescent and glandular : scaly stem ris- 

 ing out of ground 2 t)r 3 inches, bearing numerous fascicled peduncles of about the 

 same length : lobes of the calyx not longer than its tube, broader and shorter than 

 in the preceding: corolla j)urplish or sometimes sulphur-yellow. — Orobanche fas- 

 ciculata, Nutt. ; Hook. PI. ii. 93, t. 170. 



Sandy ground : commoner than the other, extending eastward to tho Mississippi and the upper 

 Great Lakes. 



§ 2. Stems rising above the ground : Jtowers racemose, panicled, or spicate, mostly luith 

 one or two bractlets close to or rarely below the calyx : corolla plainly bila- 

 biate ; np2)er lip '1-lobed or notched ; lower i-j^arted. — Nothaphvllon, Gray. 



* Flowers racemose, distinctly pedicelled, 2^etty large {an inch or more long) : the lobes 

 of t/ie corolla more or less spreading : calyx b-parted into long and slender lobes. 



3. A. comosum, Gray, Low, branching at or near the surface of the ground : 

 flowers oil sleudm- and mostly naked pedicels in a corymb or short raceme: bractlets 

 at the calyx often wanting, when present very slender: corolla rose-colored or purple, 

 with oblong spreading lobes. — Orobanche comosa, Hook. 1. c. t. 1G9. 



Dry hills ; parasitic on Arlonisna and other ]>lants ; on tlio Coast Kango back of Monterey 

 (Brcu)cr) to Washington Territory. Pedicels sometimes nearly an inch long. Calyx half tho length 

 of tho corolla, which is not rarely l.J inches long and broad at tho throat. Authors woolly. 



4. A. Califomicum, Gray. Stem stout, a span or more high, simple or branch- 

 ing : llowers crowded in an at len«^th elongated and dense sjjike-like raceme : pedi- 

 cels shorter than the calyx, which is commojdy 2-bracteolato and its slender divisions 

 almost as long as the yellowish or purplish corolla, the lobes of which are rather 

 shorter and less spreading than in the preceding. — Orobanche Californica, Cham. & 

 Schlecht. Phelipcea Californica, Don ; Ileuter in DC. Prodr. xi. 11. P. erianthera, 

 Watson, Bot. King Exp. 225, not of Engelm. 



Dry hills, from near the coast to Nevada. Anthers naked or slightly hairy. 



