OliOBANCHACE^. (BROOM-KAPE FAMILY.) 289 



Order 57. OROBAlVC'HACE.i:. (Biuh.m-Rai'i: Family.) 



Root-parasitic herbs, destitute of i^M-een fc.lingc, with ahcniatc M-ale8 

 ill pLice of leaves. P''h)wers hermaphrodite, 5-iiieroii.s as to pt-riaiith, 

 with didyiiamous stamens, solitary in the axils of hracts or scales, 8«»me- 

 times on scapiform peduncles, sometimes collected in a tirminal spike. 



1. APHYLLON, Mitchell. Canckh-u(»<.t. 



Flowers pedunculate or pedicellate: calyx 5-clcft : corollii f^unicwliat hila- 

 biate; upper lip more or less spreading, mostly Globed; lower spread i n;ii : 

 stamens included: style deciduous. — Brownish or whiti.sh, low, coimnonlv 

 viscid-pubescent or glandular plants; with violet-purplish or yellowish 

 flowers. 



* Peduncles or scapes long and slender from the arils of Jleshj loose scales, not 



bracteolate : corolla with elongated somewhat curved tube, and widelij spreadinrf 

 somewhat equal I g 5-lobed limb, onlg obscurelg bilabiate. 



1. A. uniflorum, Gray. Scaly stem short and nearly subterranean, 

 bearing few scapes a span high : calgx-lobes mostlg much longer than the tuU', 

 subulate, usually attenuate : corolla violet-tinged, the flower an inch long ; the 

 lobes ohovate and rather large. — Damp woods; from Newfounilland to Texa-s, 

 and westward across the continent. 



2. A. fasciculatum, Gray. More pubescent and glandular : stem often 

 emergent and mostly as long as the numerous fascicled }>edunrles, not rarely 

 shorter : calgx-lobes broadig or triangular-subulate, not longer than the tube, very 

 much shorter than the didl gellow or purplish corolla ; lobes of the latter ol>tnng 

 and smaller. — From Lake Michigan to Arizona and westward across the 

 continent; on Artemisia, Eriogonum, etc. 



Var. luteum, Gray. A very caulescent and short-peduncled form, with 

 sulphur-yellow corolla, and whole plant light yellow. — Synojtt. Fl. ii. .*n2. 

 Wyoming, Parrg. On grasses. 



* * Caulescent, and the inflorescence thgrsoid or spicate: pedicels orcalgx 1 to 



2-bracteolate : corolla manifestlg bilabiate. 



3. A. multiflorum, Gray. Whole plant viscidly pruinose-pubornl(>nt. a 

 span or two high : flowers nearly sessile or the lower ones sln)rt-pedicellt'd : 

 calgx bibracteolate, almost 5-parted into linear-lanceolate lobes, fully half the 

 length of the ample {inch or more long) j)nrp]ish corolla: anthers vcri/ u-oitll'i. 

 — Gravelly plains and pine woods, W. Texas to Arizona, extending; into 

 S. Colorado. 



4. A. Ludovicianum, Gray. Rather less pnbe.scent : spikes more fre- 

 quently compound: ndiix tf^s dccph/ and sonuwhat unrfptath/ fw/f/K- ronJltt 

 about half smaller ; upper lip sometimes almost entire: atitlurs (before dehi.H- 

 cence) glabrous or nearig so. — Phelipaa Ludoviciana, Walp. From the Sa.*- 

 katchewan to Texas and westward. 



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