174 VALERIANACE^E. (VALERIAN FAMILY.) 



5. O. Ciirrillea. (BLnETS.) Glabrous; stems erect, slender, sparingly 

 branched (3' -5' high); leaves oblong-spatulate (3" -4" long) ; peduncles Jili- 

 form, l'-27' long; pod free to the middle; seeds rough-dotted. © (Housto- 

 nia easrulea, L. Hedyotis, Hook.) — Moist and grassy places ; common. May - 

 Aug. — A delicate little herb, producing in spring a profusion of light-blue 

 flowers fading to white, with a yellowish eye. 



0. sekpylli folia (Houstonia serpyllifolia, MicJix.) may probably be found 

 in the high mountains of Virginia; and 0. rotondif6l,ia in the southeastern 

 part of the same State. 



Suborder III. LOGArVIEiE. The Logania Family. 



7. ItlSTKEOLA, L. Mitre-Wokt. 



Calyx 5-partcd. Corolla little longer than the calyx, somewhat funnel-form, 

 5-lobcd, valvate in the bud. Stamens 5, included. Ovary free from the calyx, 

 except at the base, 2-ccllcd : styles 2, short, converging and united above ; the 

 stigmas also united. Pod projecting beyond the calyx, strongly 2-horned or 

 mitre-shaped, opening down the inner side of each horn, many-seeded. — Annual 

 smooth herbs, with opposite leaves, small stipules between the leaves, and small 

 white flowers spiked along one side of the branches of a terminal petioled cyme. 

 (Name, a Hide mitre, from the shape of the pod.) 



1. Ill* pelioif&ta, Ton-. & Gray. Leaves thin, oblong-lanceolate, peti- 

 oled. — Damp soil, from Eastern Virginia southward. — Plant l°-2° high. 



8. SPIOGfilA, L. Pink-root. Worm-grass. 



Calyx 5-partcd, persistent ; the lobes slender. Corolla tubular-funnel-form, 

 5-lobed at the summit, valvate in the bud. Stamens 5 : anthers linear. Style 

 6lcnder, hairy above, jointed near the middle. Pod short, twin, laterally flat- 

 tened, separating at maturity from the base into 2 carpels, which open loculiei- 

 dally, few-seeded. — Chiefly herbs, with the opposite leaves united by means of 

 the stipules, and the flowers spiked in one-sided cymes. (Named for Prof. 

 Spigelius, who wrote on botany at the beginning of the 17th century.) 



1. 8. M arilamlica, L. Stems upright, simple (6'- 15' high) ; leaves 

 sessile, ovate-lanceolate, acute; spike 3 - 8-flowered ; tube of the corolla 4 times 

 the length of the calyx, the lobes lanceolate ; anthers and style exserted. 1| — 

 Rich woods, Pennsylvania to Wisconsin and southward. June, July. — Corolla 

 1^' long, crimson outside, yellowish within. — A well-known officinal anthel- 

 mintic, and a showy plant. 



Order 57. VALERIANACE^l. (Valerian Family.) 



Herbs, with opposite leaves and no stipules ; the calyx-lube coherent with 

 the ovary, ivhich has one fertile 1-omded cell and two abortive or empty ones ; 

 the stamens distinct, 1-3, fewer than the lobes of the corolla, and inserted 

 on itt tube. — Corolla tubular or funnel-form, often irregular, mostly §« 



