GENUS 3. 



LOGANIA FAMILY. 



73 ' 



i. Cynoctonum Mitreola (L.) Britton. 

 Mitrewort. Fig. 3328. 



Ophiorhiza Mitreola L. Sp. PI. 150. 1753. 

 Anonymos petiolata Walt. Fl. Car. 108. 1788. 

 Cynoctonum petiolatum Gmel. Syst. 2: 443. 1791. 

 Mitreola petiolata T. & G. Fl. N. A. 2 : 45. 1841. 

 Cynoctonum Mitreola Britton, Mem. Torr. Club 5 : 258. 

 1894. 



Stem simple, or branched near the base, or some- 

 times also above, glabrous, slender, erect, terete, 

 i-2 high. Leaves lanceolate or ovate, petioled, 

 i '-3' long, 3"-!' wide, acute at both ends, glabrous; 

 cymes terminal and often also in the upper axils, 

 slender-peduncled, the divisions slender, simple or 

 forked; flowers about i" broad, numerous, sessile 

 or very nearly so ; capsule deeply 2-lobed, com- 

 pressed, the lobes at length widely diverging, acute, 

 dehiscent by a slit in the ventral suture near the 

 summit. 



In wet or moist soil, Virginia to Florida, Texas and 

 Mexico. Also in the West Indies. June-Sept. 



4. POLYPREMUM L. Sp. PI. in. 1753. 



A glabrous diffusely branchel annual herb, with opposite linear-subulate leaves, their 

 bases connected by a stipular membrane, and small white flowers in terminal bracted cymes. 

 Calyx deeply 4-parted (rarely s-parted), the segments subulate, scarious-margined below. 

 Corolla rotate-campanulate, bearded in the throat, shorter than the calyx, 4-lobed (rarely 

 5-lobed), the lobes imbricated in the bud. Stamens 4 (rarely 5), inserted on the corolla, 

 included ; filaments short ; anthers ovoid-globose. Ovules numerous in each cavity of the 

 ovary, on oblong placentae; style short; stigma capitate or obscurely 2-lobed. Capsule 

 globose-ovoid, slightly compressed, didymous, loculicidally 2-valved, the carpels at length 

 septicidal. Seeds minute, smooth. [Greek, many-stemmed.] 



A monotype, abundant in the wanner parts of America. 



i. Polypremum procumbens L. Polypremum. 

 Fig- 33 2 9. 



Polypremum procumbens L. Sp. PI. in. 1753. 



Stems tufted, somewhat rigid, 4-angled, spreading on 

 the ground, ascending or erect, usually much branched, 

 2 r -i2' long. Leaves narrowly linear, i'-ii' long, i"-i" 

 wide, acute, sessile, minutely rough-toothed on the mar- 

 gins, often with smaller ones fascicled in their axils ; 

 flowers solitary, sessile in the forks of the cymes and 

 along their branches, leafy-bracted, the bracts similar to 

 the upper leaves; corolla i" or less long; capsule crusta- 

 ceous, about i" in diameter, slightly 2-lobed, the lobes 

 obtuse. 



In dry sandy soil, New Jersey and Pennsylvania to Flor- 

 ida, Kentucky, Missouri, Texas and Mexico. Also in the 

 West Indies. Occurs in cultivated fields as a weed. Prob- 

 ably adventive in its northern range. May-Sept. 



