42 THE FLORA OF IOWA. 



the calyx; raceme simple; calyx tubular, striate, glabrous, teeth 

 acute; corolla little longer than the calyx, blue. [S. irichostemoi- 

 des, Pursh.) 



6i2. Ellisia Nyctelea, L. —E. ambigtia, Nutt., is only a slender 

 form of this species according to Dr. Gray in Proc. Am. Ac. X. Our 

 plant is of this character. 



PHYSAMS, L. 



Gray's Revision in Proc. Am. Ac. X. does not effect the species 

 mentioned except to change the synonymy as shown in the Cata- 

 logue. 



658, OxYBAPHUs ANGUSTIFOLIUS, Sweet. - Stems glabrous, as- 

 cending, slender, i^- (P high; leaves glabrous, linear, usually elon- 

 gated, 2'-4' long, thick, glaucous; flowers loosely panicled; pedun 

 cles and involucre pubescent; involucre with 5 triangular, ovate, 

 acuminate lobes, 3 -5-flowered, becoming 5" long in fruit; perianth 

 short, sub-campanulate or rotate-funnel-form, scarcely exceeding the 

 involucre, white or pink, the limb I^" long; stamens exserted; fruit 

 hoary-pubescent, 2%" long. Flor. Col., Port. &= Con/. 



659. OxYBAPHUS ALBIDUS, Sweet. Nearly glabrous except the 

 inflorescence; leaves all subsessile, lanceolate or oblong-lanceolate, 

 acute at base; fruit more hirsute, muriculate along or l:)etween the 

 ribs. JVatson in A'ing^s K^p. 



662. Chenopodium Boscianum, Moq. —Erect, blender, 2^ high, 

 loosely branched, nearly glabrous; leaves thin, oblong to linear-lan- 

 ceolate, l'-2' long, acute, attenuate into a long, .slender petiole, the 

 lower sinuate-dentate, or often all entire; flowers very small, solitary, 

 or in small clusters upon the slender branchlets; calyx green, not 

 strongly carinate, partly covering the at length naked seed, which is 

 y^" broad. Watson^ s Rev. Chen. Proc. Am. Acad. IX. 



This is the var. Boscianum of C. album in Gray's Manual. 



668. Amarantus Blitum, L. -Annual, glabrous; stem decum- 

 bent, branched, angular; leaves dark green, ovate or obovate, with 

 rounded tip, i'-3' long, long petioled; flower clusters axillary, and 

 in interrupted cymes; flowers minute, tri-merous; sepals oblong, mu- 

 cronate, exceeding the bracts, shorter than the utricle. Hook. Flor. 

 Brit. Isl, 



679. Polygonum Hartvvrightii, Gray. -Strigose hirsute or gla- 

 brous; stem erect, striate, bearing at the lop thickish leaves, which 

 are broadly lanceolate, acute or somewhat obtuse; petioles short; 

 sheathes long with a flat foliaceous limb, which is .setose ciliate; pe- 

 duncle erect, eglandulose, bearing a solitary dense cylindrical spike 

 of rose-colored flowers; stamens 5; style deeply cleft; perigonium 

 eglandulose. Proc. Am. Ac. 



703. Euphorbia hexagona, Nutt. — Appressed and sparsely hir- 

 sute; stems slender, l^ranches angulato-striate; leaves all opposite, 

 short petioled, linear-lanceolate; floral ones attenuated linear; throat 

 and exterior of the involucre appressed hirsute, lobes short, multifid; 

 glands 5; style sub bilobed; capsule glabrous; seeds tuberculate. 

 Plant I'J- ly, -' high. DC. Prod. AT. 



756. Salix nigra, Marsh., var. AMYGDALOIDES, Ands, — (S. amyg- 

 daloides, Ands.) Aments spreading; scales testaceous somewhat pi- 

 lose; capsule ovate conic; style short; stigma short and thick; leaves 

 broadly lanceolate, generally produced into a narrow cuspidate point, 

 glaucous beneath, margins grandular serrate; stipules soon decidu- 

 ous. Ands. Syn. Sal. 



