LOGANIACEAE. 329 



1. Spigelia AnthSlmia L. Sp. PI. 149. 1753. 



Annual, simple or branched, 5 dm. high or less. Leaves lanceolate, 3-10 

 cm. long, acute or acuminate, pale beneath, finely ciliolate; inflorescence sub- 

 tended by a whorl or pair of lanceolate or ovate bracts larger than the leaves; 

 flowers small, in slender unilateral spikes 5-12 cm. long; calyx-lobes narrowly 

 lanceolate, about 2 mm. long; corolla purplish white, 5-9 mm. long; capsules 

 5-6 mm. broad, tubercled. 



Moist soils, Abaeo, Andres, New Providence, Great Exuma, Bleuthera, Cat 

 Island, Watling's, Acklln's, Crooked and Fortune Islands and Marlguana : — ^Florida ; 

 West Indies ; continental tropical America. Spigema. Pink. 



2. CYNOCTONUM J. F. Gmel. Syst. 443. 1791. 



Herbs, our species annual, with opposite entire leaves, and minute stipules, 

 or the leaf-bases connected by a stipular line. Mowers small, whitish, in one- 

 sided spikes forming cymes. Calyx 5-parted. Corolla urn-shaped, 5-lobed. 

 Stamens 5, included; filaments short; anthers cordate. Ovules numerous, on 

 peltate placentae; style short, 2-divided below, united above by the common 

 stigma, the divisions becoming separate. Capsule '2-lobed at the summit; 

 carpels divaricate, dehiscent along the inner side. Seeds numerous, small, 

 tuberculate. [Greek, dog-kiUing.] About 5 species, of warm and tropical 

 regions. Type species: Cynoctonum sessilifolium Gmel. 



1. Cynoctonum MitrSola (L.) Britton, Mem. Torr. Club 5: 258. 1894. 



Ophiorrhiga Mitreola L. Sp. PI. 150. 1753. 

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



Stem glabrous, erect, terete, 3-6 dm. high. Leaves lanceolate to ovate, 

 petioled, 2.5-8 cm. long, 6-25 mm. wide, acute at both ends, glabrous; cymes 

 terminal and often also in the upper axils, slender-peduncled ; fiowers about 

 2 mm. broad, numerous, sessile or nearly so; capsule deeply 2-lobed, compressed, 

 the lobes at length widely diverging, acS:e. 



Savannas, bracklsli marshes, palmetto-lands and borders of mangrove swamps. 

 Great Bahama, Andros and New Providence : — Virginia to Florida, Texas and 

 Mexico ; Cuba to Porto Rico and to Trinidad ; Jamaica. The Andros plant recorded 

 by Mrs. Northrop as Cynoctonum sessilifolia (T. & G.) Britton, proves to be better 

 referable to this species. .Miteewoet. 



3. POLYPKEMUM L. Sp. PI. 111. 1753. 



A glabrous diffusely branched 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 seg- 

 ments subulate. Corolla campanulate, bearded in the throat, shorter than the 

 calyx, 4-lobed (rarely 5-lobed). Stamens 4 (rarely 5), inserted on the corolla, 

 included; filaments short; anthers ovoid-globose. Ovules numerous, on oblong 

 placentae; style short; stigma capitate or obscurely 2-lobed. Capsule slightly 

 compressed, didymous, loculicidally 2-valved, the carpels at length septicidal. 

 Seeds minute, smooth. [Greek, many-stemmed.] A monotypic genus. 



1. Polypremum procmnbens L. Sp. PI. 111. 1753. 



Stems tufted, somewhat rigid, 4-angled, 5-30 cm. long. Leaves 1-4 em. 

 long, 1-2 mm. wide, acute, sessile, minutely rough-toothed on the margins, often 

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