Paronychia. ILLECEBRACE/E. 171 



0. depressa: dwarf, densely dichotornous; leaves and stipules imbricated 

 on the short branches ; liowers nearly immersed in the leaves.— P. depressa, 

 NiUt. ! mss. 



Rocky Mountains, lat. 41=", Dr. James! Nutlall ! /?. " On the barren 

 plains of the Rocky Mountains (lat. 4P), and on the plains of the Oregon." 

 Nuttall .'—Stems 4-6 inches high. Leaves on theflowerint? branches about 

 half an inch long, slightly 2-sulcate, about the length of the internodes. Sti- 

 pules shorter than the leaves, ovate-lanceolate, acuminate, or setose ; the 

 point much shorter than in P. dichotoma ; the flowers smaller, fewer, and 

 more crowded ; the cusp stouter and confluent with the arched inner por- 

 tion. Calyx obpyramidal at the base. Style 2-cleft \ of its length. The 

 H. depressa has the branches crowded with leaves to the summit; the sti- 

 pules are nearly the length of the leaves, and the flowers are scarcely cymose. 



5. P. dichotoma (Nutt.) : glabrous, densely csespitose and branching from 

 the thick procumbent ligneous base; leaves subulate, mucronate ; cymes 

 manv times dichotornous, without central flowers, diffuse, fastigiate; bracts 

 similar to the leaves ; sepals linear, 3-ribbed, cuspidate, slightly cucullate at 

 the apex within; sterile seta; very short. — Nutt. ! gen. 1. p. 159; lJC.prodt\ 

 3. ;). 372. Achvranthes dichotoma, Linn. mant. p. 51 ; Willd. sp. 1. p. 

 1196. Plottzia dichotoma, Am. in Limll. nat. syst. ed. 2. p. 441. 



On rocks around Harper's Ferrv, Virginia ! N. Carolina, Schn-einitz ! 

 Arkansas, NiUtaU ! Dr. Leavenworth! Texas, Dritmmoiul! July-Nov. 

 — Flowering stems 6-12 inches high, nearly simple. Leaves an inch or 

 more in length (those of the flowering stems larger than the internodes ; of 

 the barren stems imbricated), erect, 2-sulcate beneath, about i a line wide. 

 Stipules lanceolate, piliferous ; the adjacent ones more or less united. Se- 

 gals yellowish, the base lined with a Avhitish disk. Style filiform, nearly as 

 ougas the sepals, cleft usually about i its length.— Separated from Parony- 

 chia by Arnott, who however did not observe the 2-cleft style and the mi- 

 nute sterile sets, which indeed are not easily detected in dried specimens. 

 P. Jamesii connects it with other species of the genus. Nuttall's syno- 

 nym, " Illecebrum dichotomum, Tf7//c/." is perhaps a mistake, as there is no 

 such species in WiUdenow's Species Plantarum. 



6. P. arg7jrocoma (Nutt.) : csespitose, decumbent, minutely pubescent; 

 leaves linear, acute, veinless ; cymes terminal, glomerate ; flowers enveloped 

 by the numerous scarious bracts ; sepals hairy, setaccously cuspidate, the 

 inner portion bearded above ; style slender, 2-cleft at the summit, hair}^ at the 

 base; sterile setse very short (l^utt.) or none. — Nutt.! gen. 1. p. 160; DC. 

 prodr. 3. p. 372. Anychia argyrocoma, Michx.! fi. 1. p. 113 ; Pursh, fl. 1. 

 p. 176 ; Ell sk. 1. p. 308, excl. syn. 



On rocks, mountains of Virginia (Pursh) N. Carolina! Georgia! and 

 Tennessee 1 — Flowering stems ascending, 4-10 inches high. Leaves i-J of 

 an inch long, much crowded on the younger stems. Stipules lanceolate, 

 acuminate, nearly as long as the leaves. Bracts like the stipules. Sepals 

 linear. 1-nerved, with a whitish straight acumination.— The synonym and lo- 

 cality" Harper's Ferry, Virginia" in Elliott, I. c. belong to P. dichotoma. 



— 7. P. herniarioides (Nutt.): depressed, diffusely branched, scabrous- 

 pubescent ; leaves oval or oblong, ciliate, nmcronate ; flowers sessile in the 

 axils of the leaves ; sepals subulate, mucronate ; sterile setae very minute. — 

 Nutt.! gen. 1. p. 160. Anychia herniarioides, Michx. ! Jl. 1. p. 113; Ell. 

 sk. l.p.SOSl 



In dry sandy places, N. Carolina, Michaux ! S. Carolina {herb. 

 Schiceinitz !), and Georgia, Baldwin!— k small depressed plant with some- 

 what the aspect of Euphorbia polvgonifolia. Leaves sessile, often slightly 

 falcate, 3-4 lines long, minutely hispid under a lens. Stipules shorter than 



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