114 SYNOPSIS OF THE FLORA OF COLORADO. 



ASCLEPIAS JAMESII, Torr. Bot. Hex. Bound., p. 162. Very smooth, 

 somewhat glaucous; stem stout, l-2 high; leaves orbicular or orbie- 

 ular-obovate, subcoriaceous, retuse or emarginate, cordate at the base, 

 very short-petioled, 3'-4' long, 2J'-3 J' wide, abruptly pointed ; umbels 

 many-flowered, short-peduncled ; corolla greenish, segments broadly 

 ovate ; hoods purplish, dilated, obliquely-truncated ; the horn with the 

 acute point exserted and projected partly over the stigma ; pods ovoid, 

 smooth. Gallon City, Brandegee. 



ASCLEPIAS BRACHYSTEPPIANA, Eiig. Bot. 1. c., p. 103. Stem branch- 

 ing, 8'-12' high ; leaves opposite, liuear-lanceolate, abruptly narrowed 

 at the base into a short petiole, gradually tapering to a long, narrow 

 point, 3'-6' long ; umbels 3-8 ; peduncles shorter than the pedicels, 

 many-flowered ; corolla dull-purple, segments ovate-oblong, reflexed ; 

 hoods broader than long, toothed on the inner margins ; falciform pro- 

 cess vertical ; pods oblong, smooth, 2' long, acuminate. On the plains. 

 Hall & Harbour, 478. 



ASCLEPIAS OVALIFOLIA, Decaisne. Hall & Harbour, 480. Canon 

 City, Brandegee. Upper Arkansas, Porter. Monument Park, Coulter. 



ASCLEPIAS TUBEROSA, L. Caiion City, Brandegee. 



ASCLEPIAS VERTICILLATA, L. Canon City, Brandegee. Eastern Col- 

 orado, Dr. Smith. 



Var. Dwarf, 4' 6' high, branched from the base ; stems very leafy 

 with crowded, filiform leaves ; umbels corymbose at the summit. Hall 

 & Harbour, 481. A common form on the plains around Denver and Col- 

 orado Springs, Porter. Canon City, Brandegee. Dr. Smith. 



ACERTES DECUMBENS, Decaisne. DC. Prod., S, p. 552. Stems 1-L >0 

 long, numerous, decumbent, sometimes angular; leaves scattered and 

 subopposite, ovate-lanceolate, or more usually narrow-lanceolate, (<>' long, 

 y-V wide,) acute, margins scabrous ; umbels terminal, sub-globose ; 

 corolla-lobes ova.te, greenish-yellow; hoods purple, equaling the lobes 

 and exceeding til, disk ; pods smooth, 4' long, I' in diameter. S. Colo- 

 rado, Hoopes. 



ACERATES YIRIDIFLORA, Ell. Wet Mountain Valley, Brandegee. 



ACERATES AURICULATA, Engelm. Bot. Mex. Bound., p. 1GO. Stem 

 erect, 2-3 high, someAvhat glaucous ; leaves scattered, linear, filiform 

 or narrowly linear, slightly scabrous but not revolute on the margins, 

 4 / -6 / long, less than 1" wide ; umbels several, axillary, immy-tloweivr:, 

 on short peduncles; pedicels 6" long, pilose ; calyx villose on the out- 

 side ; lobes of the corolla reflexed, 2" long ; hoods obscurely 3-toothed 

 at the apex, involute 011 the margins^ very broadly biauriculate at base, 

 with large triangular wings ; pods lanceolate, long-beaked, 3'-4' long. 

 Near Denver, Dr. Smith. Caiion City, Brandegee. Pueblo, Eedjield. 



JTASMIMEJEJ 



MENODORA 2 SCABRA, Gr. Sill Jour., (2d. Series,) 14, p. 44. Stems erect, 



1 JASMINES, BroAvn. Flowers perfect, regular; calyx persistent, dentate or lohed, 

 lobes 5-8; corolla hypogoiious, gamopetalous, 5-8 lobed, salver- form, lobes imbricate 

 in aestivation, two exterior contorted or valvate ; stamens 2, adnate to the tube an*. 

 included, anthers 2-eelled, cells dehiscing introrsely by a longitudinal chink ; ov;u' v 

 destitute of a hypogonous disk, 2-celled, 2-lobed at the apex ; ovules erect, 1 or 2 in 

 each cell or rarely 2-4 ; style simple, stigma 2-lobed ; fruit either two-berried or s.-p,-. 

 rable into two capsules; valves septiferous in the middle; seeds with little or n; 

 albumen ; embryo straight ; cotyledons two. 



3 MENODORA, H. & B. Calyx 10-14 lobed, rarely 7-9 lobed ; lobes linear or setaceous. 

 longer than the tube of the corolla. Corolla siiort-fuimelforui or subrottite, more or 

 less bearded in the throat ; limb 5-parted, lobes obovate or oblong, scarcely inucroiiu- 

 late ; filaments filiform ; anthers awuless. 



