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. z: 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. PL 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 5-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 warmer 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'-i2' long. Leaves narrowly linear, *'-:' 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. 



