LOGAXIACE^. (lOGAXIA FAMILY.) 201 



vate, sessile, the upper surface and margins roughish; flowers axillary, 

 solitary, or the terminal ones three in a cluster ; tube of the corolla more 

 than twice as long as the calyx lobes. — IS'ear Fort King, East Florida. — 

 Stem 6'- 10' high. Leaves 4"- 9" long. Corolla 4" long, white. 



2. S. gentianoides, Chapm. stem erect, simi^le, 4-augied, roughi.sh ; 

 leaves roundish, ovate, or oblong, sessile, acute, the upper surface and- mar- 

 gins roughened ; spikes terminal, few-flowered ; lobes of tlie corolla connivent ; 



stamens and .'ityle included. — Liglit dry soil, West Florida. May -June. 



Stem 6'- 10' high. Corolla 6"- 10" long, pale rose-color. 



3. S." Mai'ilandica, L. Stem simple, erect, smooth, 4-angled ; leaves 

 ovate-lanceolate, or oblong, acute, sessile, pubescent on the veins; spikes ter- 

 minal, many-flowered, sometimes forking; corolla long, slender, the lobes 

 spreading; anthers and style exserted. — Rich woods. May -June. — Stem 

 l°-2° high. Corolla \i' long, scarlet, yellow within. — A popular vermi- 

 fuge. 



2. MITREOLA, L. Mitre-wort. 



Calyx 5-parted. Corolla short, 5-lobed, valvate in the bud, the tube round- 

 ish, bearded in the throat. Stamens 5, included : anthers ovate. Styles 2, 

 short, united above. Stigma capitate. Capsule 2-parted, mitre-shaped, many- 

 seeded, the two lobes opening on the inner face near the apex. Seeds oval, 

 concave. — Smooth herbs, with opposite leaves, and small white flowers in 

 terminal and axillary cymes, with the simple branches recurved in the bud. 



1. M. petiolata, Torr. & Gray. Stem branching; leaves tliin, oblong, 

 acute, narrowed into a petiole. (Ophiorhiza lanceolata, EII.) — Muddv banks, 

 Florida to North Carolina, and westward. June -Sept. (T) — Stem 4-angled, 

 1° - 2° liigh. Leaves 2' - 3' long. 



2. M. sessilifolia, Torr. & Gray. Stem simple, 4-angled ; leaves thick, 

 OA-ate or roundish, strongly veined, sessile, rough on the margins; flowers and 

 capsule very small. (Ophiorhiza Mitreola, Michx.) — Varies with lanceo- 

 late obscurely veined leaves, and larger flowers and fruit. — Gras.sy swamps. 

 July -Sept. (l) — Stem 6' -18' high. Leaves 6"- 10" long. Plant pale 

 green. 



3. POLYPREMUM, L. 



Calyx deeply 4-parted, persistent. Corolla wheel-shaped, bearded in the 

 throat, 4-lobed, imbricated in the bud. Stamens 4. Style single, very sliort. 

 Stigma ovoid, entire. Capsule ovoid, compressed, 2-celled, loculicidallv 2- 

 valved, many-seeded. — A low smooth perennial herl), with 4-augled forking 

 stems, linear acute leaves, their bases united by the membranaceous stipules, 

 and solitary sessile white flowers in the forks of the stem. 



1. P. procurabens, L. — Waste places, Florida to Nortli Carolina. 

 June -Sept. — Stems 6'- 10' long, erect or prostrate, clustered. Flowers 

 very small, the corolla barely longer than the calyx lobes. 



4. GELSEMIUM, Jnss. Yellow Jess.\mixe. 



Flowers dimorphous. Calyx .5-parted, persistent. Corolla fnnncl-sliajjed, 

 5-lobed : the lobes rounded, emarginate, spreading, quiucuncial in the bud, the 



