§ PARONYCHIA. Sepals evidently awned at apex. Les. Linear and sublate....................
Nos. 1, 2
§ Anychia (Mx. partly). Sep. merely mucronate at apex. Lvs. lanceolate to oval.(*)
Nos. 3, 4
* Stems erect, with diffusely ascending branches. Stamens 2 or 3...
Nos. 5, 6
1 P. dichotoma Nutt. Glabrous, densely branched; lvs. acerose, mucronate; bracts like the leaves; cymes fastigiate, with no central flower; sep. 3-veined, cuspidate.- Rocks (Harper's Ferry), Va., and Car. to Ark., rare. Densely matted and branched, the flowering stems 6 to 12' high. Lvs. crowded, 1' by 1/2". Sty. bifid at top. Minute setae in place of petals. Jl. - Nov.
2 P. argyrocoma Nutt. Pubescent, tufted, decumbent; lvs. linear, acute; cymes glomerate, terminal; fls. enveloped in dry, silvery bracts: sep. hairy, 1-veined, setaceously cuspidate. - White Mts., N. H.. in the gorge behind the Willey house (Chapman) and in the Allegh. and Cumb. Mts. Flowering stems 4 to 10' high. Lvs. crowded, 6 to 10" long. - Fls. concealed in the bracts; the cusp equaling the sepals. Jl.
3 P. herniarioides Nutt. Scabrous, diffusely branched; lvs. oval or oblong, mucronate; the raminal alternate. Fls. sessile in the axils of the leaves; sep. 3-veined, merely mucronate. - N. Car. (Miss Carpenter) to Ga., in sandy soil. A little depressed plant, spreading on the sand, with minute lvs. and fls. Branches alternate with 1-sided branchlets. Lvs. 3 - 2 - 1" long, 1/2 as wide, stip. shorter. Fls. 1/4" long.
4 P. Baldwinii Torr. & Gr. Diffusely branched, procumbent; lvs. linear-lanceolate, very acute, all opposite; fls. longer than the setaceous stipules, mostly terminal, stalked; stam. 5. - Fla. (Mettauer), in dry fields. Sta more openly branched, many from the same root, covering a circular spot 12 - 20' diam. Lvs. few, 3 - 8" long, 1/2 - 2" wide, sessile. Fls. a 1/3 larger than in No. 3. Oct.
5 P. Canadensis. Stem erect, slender, pubescent, many times forked, with slender or capillary branches; lvs. lanceolate, varying to oblanceolate; the cauline opposite, the raminal alternate; 2 pairs of scarious, subulate stipules at each fork, which are shorter than the flower; style none; utricle equaling the greenish sepals. - Hilly woods, Can. to Ga., W. to Ark. Hight 6 - 10 or 18', often nearly smooth. Lvs. 4 - 10" long, somewhat stalked. Fls. 1/2" long, somewhat pedicellate. Seed globular, rosin colored. Jn. - Aug. (Queria, L. Anychia capillacea Nutt.) β. pumila. Dwarf, a few inches (2 - 4') high, the lvs. reduced in proportion, very pubescent; stems short-jointed, tufted, fls. sessile, glomerate; style as long as the ovary (at least in specimens from Md. sent by Mr. H. Shriver), forked at apex. (A. dichotoma DC.)
17. SIPHONYCHIA, Torr. and Gr. (Gr. a tube, that is, Anychia with a tubular calyx.) Sepals linear, petaloid above, coherent into a tube below, unarmed; petals 5 setae alternate with the stamens; style filiform, minutely bifid; utricle included in the calyx.- Procumbent, diffuse and widely spreading. Fls. in glomerate, terminal cymules.
S. Americana Torr. and Gr. - S. Car. to Fla. Sts. 1 - 2f in length. Lvs. oblanceolate, much shorter than the internodes, 12 - 9 - 6" long, obtuse. Bracts. like the lvs., very small. Fls. very numerous, 1" or more in length, with hooked bristles below. Sep. white above. (Herniaria Nutt.)
18. SCLERANTHUS, L. Knawel (Gr. hard, ; when in fruit the floral envelope appears hard and dry.) Sepals 5, united below into a tube contracted at the orifice; petals 0; stamens 10, rarely 5 or 2; styles 2, distinct; utricle very smooth, inclosed in the hardened calyx tube.- A prostrate, diffuse little weed, exstipulate.
S. annuus L. Dry fields and roadsides, N. Eng. and Mid. States. Sts. numerous, branching, decumbent, short (3 - 6'). Lvs. linear, acute, short, opposite, partially united at their bases. Fls. very small, green, in axillary fascicles. Jl.
19. MOLLUGO, L. Carpet-weed. Calyx of 5 sepals, inferior, united at base, colored inside; corolla 0; stamens 5, sometimes 3 or 10; filaments setaceous, shorter than and opposite to the sepals; anthers simple; capsule 3-cclled, 3-valved, many-seeded; seeds reniform. - Lvs. at length apparently verticillate, being clustered in the axils.
M. verticillata L. Lvs. cuneiform, acute; st. depressed, branched; pedicels 1-flowered. subumbellato; sta. mostly but 3.- Dry places throughout N. America. Sts. slender, jointed, branched, lying flat upon the ground, forming a roundish patch. At every joint is a cluster of wedge-shaped or spatulate lvs. of unequal size, usually 5 in number, and a few flowers, each on a solitary stalk, which is very slender, and shorter than the petioles. Fls. small, white. Jl. - Sept