RUBIACK/K. (mADDKU FAMILY.) 181 



Var. longifolia, dray. Smooth; leaves lan-ocolatc or linear, l-ribbcd, the 

 lowest s])atiilaHM)l)lon;;; calyx-lobes as \oug as the globose capsule. (IIous- 

 tonia loii^Mlulia, ]\'illd.) — With the preceding. 



Var. tenuifolia, Gray. Branches and pedicels filiform, spreading; leaves 

 remote, narrow-linear; flowers and capsules smaller. (Iloustouia tenuifolia, 

 Nutt.) — Mountains of North Carolina. July. 



5. O. angUStifolia, Gray. Smooth ; root woody ; stems clustered, erect, 

 branching above ; leaves linear ; cymes crowded, with the central flowers nearly 

 sessile ; corolla white, very hairy within ; capsule ovoid, as long as the calyx- 

 teeth. (Iledyotis stcnophylla, Torr. <j- Graij,) — Sandy pine barrens, Florida, 

 and westward. June and July. — Stems l°-2° high. 



Var. filifolia. Stem shrubby at the base, diffusely branched ; leaves filiform, 

 remote; cymes scattered, 3-flowercd, the slender pedicels ecjual and spreading; 

 capsule obcordatc, rather longer than the calyx -teeth, the upper half free. — 

 South Florida. — Stem slender, 6' -10' long. Flowers and capsules very small. 



* * * Corolla wheel-shaped, shorter than the calyx-lobes : Jloivers axillarij and. termi- 



nal, single or clustered, sessile : stamens and stijle verjj short : capsule enclosed in 

 the cahjx-tube : perennial: stipules fringed. 



6. O. Boscii. Stems 4-anglcd, smooth, diffuse; leaves linear; flowers sin- 

 gle, or 2 -.3 together; corolla white or purplish; capsule ovoid. (Ilcdyotis 

 Boscii, Z)C.) — River-banks, Florida to South Carolina, and westward. July. 

 — Stems 6'- 10' long. 



7. O. glomerata, !Michx. Stems terete, smooth or pubescent, branching ; 

 leaves oblong or oval, short-petioled ; clusters dense, many-flowered; corolla 

 greenish-white. (Hedyotis glomerata. Ell.) — Wet places, Florida to North 

 Carolina, and westward. July. — Stems 10'- 15' high. 



* * * * Corolla funnd-shaped, 5-lobed, longer than the cahjx-teeth : Jloivers axillary 



and terminal, pentamerous : capstde top-shaped, included in the calyx-tube: annual: 

 stipules fringed. 



8. O. Halei. Stem weak, diffuse, forking; leaves oval-oblong, acute at 

 each end, somewhat fleshy; flowers solitary, or in short 3-5-flowered cymes, 

 white. ( Hedyotis Halei, 7orr. ij- Gray.) — Banks of rivers, South Florida, and 

 westward. July. 



19. SPIGELIA, L. PiNKROoT. 



Calyx 5-parted ; the lobes line.ar-subulate, persistent. Corolla tubular-fun- 

 nel-shaped, 5-lobed, valvate in the bud. Stamens 5 : anthers linear. Style 

 slender, jointed, haiiy above. Stigma capitate. Capsule composed of two few- 

 seeded carpels, which at length separate at the base and open loculicidally. — 

 Herbs. Leaves opposite. Flowers in one-sided terminal spikes, rarely solitary. 



1. S. loganioides, A. DC. Stem simple, ascending, somewhat 4-angled, 

 the upper part and joints slightly puberulent ; leaves ovate or obovate, sessile, 

 the upper surface and margins roughish ; flowers axillary, solitary, or the ter- 

 minal ones three in a cluster ; tube of the corolla more than twice as long as the 

 16 



