8 P. divaricata L. Low, diffuse, pubescent; lvs. lanceolate, ovate or oblong, acutish; panicle corymbous, loose; cal. roughish-puberulent, segm. linear-subulate ; cor. lobes emarginate at the end.- Can., Wis., N. Y. to Ga. and Ala. (banks of the Chattahoochee!). Sts. loosely branched, a foot or more long, flaccid. Lvs
1 to 2' long, acute, the lower tapering to the base, the upper broad and clasping at base, the floral linear setaceous. Pedicels diverging, as long as the calyx which is half as long as the corolla tube. Cor. of a peculiar light but brilliant grayish blue. Apr., May.
β. Laphamii. Lvs. ovate, pet. obtuse, entire.-Wis. (Laphain) Western Reserve (Cowles) and southward, not uncommon.
9 P. Drummondii Hook. Drummond's Lychnidia. Erect, dichotomously branched, glandular-pilous; Ivs. mostly alternate, oblong or lanceolate, scabrous; corymb dense-flowered; cal. hairy, segm. lanceolate, setaceous, elongated, revo-lute; cor. tube pilous, segm. obovate, entire.- Banks of Flint R., S. E. Ga 1 and Tex. One of the handsomest species of the genus, common in cultivation. Whole plant glubular-scabrous, 8 to 12' high. Fls. very showy, all shades from white to dark purple, and exquisitely penciled with a star. May, Jn.
10 P. bifida Beck. Low, assurgent, diffusely branched, puberulent; lvs. am-plexicaul subrevolute on the margin, acutish, lower lance-ovate, upper lance-linear; corymbs very loose, 2-5-flowered; cal. segments linear, acute; cor. tube curved, segments deeply bind.-A very distinct species, and very rare, in Mo. (Beck), Cass Co., Ill. (Mead). Stem brownish-purple, slender, 6' high. Leaves 12-15" by 1-2", lower much shorter. Pedicels 1' long. Cor. purple, tube much curved. Apr.
11 P. subulata (and P. setacea L.) Moss Pink. Procumbent, caespitous, much branched, pubescent; lvs. rigid, subulate or linear-subulate, ciliate, fascicled in the axils; cal. teeth linear-subulate, very acute; cor. lobes cuneate, emarginate. Rocky hills, Penn. to Ga. and Ky., abundant in its localities, in dense, turfy masses, spangled over in May with rose-colored flowers. Corymb, 3-6-flowered. Cor. white or pink, deeper purple in the center. May. †
2. POLEMO'NIUM, L. Greek Valerian. (Gr. war; Pliny relates that two kings fought for the merit of its discovery.) Calyx campanulate, 5-cleft; corolla rotate-campanulate, limb 5-lobed, erect, tube short; stamens declined, equally inserted at the throat, filaments with hairy appendages at base ; capsule 3-celled, 3-valved, cells many-seeded.-Herbs with alternate, pinnately divided lvs. Fls. terminal.
1 P. reptans L. St. smooth, branching, diffuse; lvs. pinnately 7-11-foliate, leaflets oval-lanceolate, acute; fls. terminal, nodding; cells of caps. 2-3-seeded.- Woods and damp grounds, Wis. to N. Y. and mts. of S. Car. Stem 12-18' high, weak, fleshy. Leaflets mostly 7, subopposite, smooth, entire, sessile, an inch long and half as wide. Segments of the calyx lanceolate-acute, persistent, much shorter than the tube of the corolla. Corolla blue, lobes short, rounded at the ends. Anthers introrse. Root creeping. May. †
2 P. cœruleum L. St. smooth, simple, erect; lvs. pinnately 11 to 17-foliate, segm. acuminate; fls. erect; cal. equaling the tube of the corolla; cells of caps. 6 to 10-seeded.- A handsome plant in gardens. Sts. clustered, about 2f high, hollow, stout, each dividing at top into a corymbous panicle. Lvs. mostly radical, on long, grooved petioles; lfts. all sessile, ovate-lanceolate, subopposite, oblique, odd one lanceolate. Fls. terminal, suberect. Cor. blue, 6" diam. † Eur
3. GIL'IA, Ruiz & Pavon. (Named for P. S. Gilio, a Spanish botanist.) Calyx 5-cleft, segments acute; corolla tube long or short, limb regularly 5-lobed; stamens 5, equally inserted at top of the tube ; disk cup-form; capsule oblong or ovoid, few or many-seeded.-Herbs with alternate, pinnatifid lvs. Fls. paniculate, capitate or scattered, elegant and showy, lilac purple to white,
§ 1. IPOMOPSIS. Corolla funnel-form, the tube much exserted.........
§ 2. GILIA proper. cor. lobes subrevolute. tube included in calyx
1 G. coronopifolia Pers. Standing Cypress St. strictly erect, tall, hairy; lvs. crowded, pinnatifid with subulate divisions; thyrse elongated, with very short branches; cor. tube thrice longer than calyx, segm. oval-oblong, erect-spreading; stam. barely exserted.- Along rivers, S. Car., Ga., Ala. A splendid herb, 2 to 4f high, its plume-like form closely beset with delicate fringe-like leaves and bearing at top a long (If) thyrse of scarlet red flowers. Cor. 15" long. Jl. (I pomopsis, Mx. Cantua, Juss.).-A more slender form found in Fla. is G. florid-ana Don.
2 G. tricolor Benth. Tricolored Gilia. St. erect, nearly smooth; Ivs. twice or thrice pinnatifid, with narrow, linear segments; cymes paniculate, 3 to 6-flow-ered * cor. tricolored, 2 or 3 times longer than the calyx, tube very short.- An elegant little garden plant, from California, If high. Fls. numerous, limb pale lilac-blue, throat purple and tube yellow.‡
4. DIAPEN'SIA, L. Calyx of 5 oval imbricated sepals, closely subtended by imbricated bracts; corolla campanulate, imbricated in the bud ; filaments 5, flat, arising from the sinuses of the corolla; anther-cells diverging at base and the dehiscence transverse; capsule papery, enveloped in the persistent calyx, 3-celled, many-seeded.-Prostrate undershrubs with densely imbricated, linear lvs. and solitary terminal fls.
DIAPENSIA proper. Anthers without awans. Flowers pedicellate ...........................
PYXIDANTHERA. Anthers with the lower valve awned. Flowers sessible................
1 D. Lapponica L. Caespitous; lvs. dense, spatulate, fleshy evergreen, obtuse and entire; fls. pedunculated.- A little, leafy plant, 2-3' high, growing on the summits of the White Mts. in N. Hampshire, forming dense tufts among the rocks. Leaves crowded, pale beneath, fleshy, 5-8" by 1" with a revolute margin, clasping base, and broadly obtuse point. Fls. on slender (1' long) terminal, solitary peduncles. Calyx of 5, obtuse leaves, longer than the leafy bracts at its base. Corolla white, with 5, flat segments. July.
2 D. barbulata Ell. Branches short, ascending; lvs. lance-cuneiform, acute, pubescent at base; fls. terminal, sessile; lower valve of the anther beaked or awned at base.-A prostrate, creeping plant, abundant in pine barrens, N. J. to Car., forming dense beds. Stems 3-6' long, subhispid. Leaves 1-2" by 1/2-1". Flowers white, 3" diam. Sepals denticulate, as long as the corolla tube. May, Jn.-The beak of the anther is variable, sometimes reduced to an acute point (Pyxidanthera barbulata Mx. D. cuneifolia Ph.)