LOGANIACE^. (lOGANIA FAMILY.) 391 



Order 78. L,OGANIACE.E, (Logania Family.) 



Herbs, shrubs, or trees, with opposite and entire leaves, and stipules or a 

 stipular membrane or line between them, and with regular 4 - b-meroits 4-5- 

 androus perfect flowers, the ovary free from the calyx: a connecting group 

 between Gentianaceas, Apocynaces, Scrophulariaceaj (from all which they 

 are known by their stipules) and Rubiacese, from which they differ in their 

 free ovary : our representatives of the family are all most related to the 

 Kubiaceaa, to which, indeed, they have been appended. 



# Woody twiners : leayeB evergreen. 



1. Gelsemium. Corolla large, the 6 lobes imbricated in the bud. Style slender ; stigmas 4. 



* * Herbs. 



2. Folypremum* Corolla 4-lobed, not longer than the calyx, Imbricated in the bud. 



3. Splgella. Corolla 6-lobed, valvate in the bud. Style single, jointed in the middle. 



4. niitreola. Corolla 6-lobed, valvate in the bud. Styles 2, short, converging, united at the 



summit, and with a common stigma. 



1. GELSJE! MIUM, Juss. Yellow (False) Jessamine. 



Calyx .5-parted. Corolla open-funnel-form, 5-lobed ; the lobes imbricated in 

 the bud. Stamens 5, with oblong sagittate anthers. Stylo long and slender. 

 Stigmas 2, each 2-parted ; the divisions linear. Pod elliptical, flattened con- 

 trary to the narrow partition, 2-celled, septicidally 2-valved. Seeds many or 

 several, winged. Embryo straight in fleshy albumen ; the ovate flat cotyledons 

 much shorter than the slender radicle. — Smooth and twining shrubby plants 

 with opposite and entire ovate or lanceolate leaves, minute stipules, and showy 

 yellow flowers, of two sorts as to relative length of stamens and style. ( Gdse- 

 mino, the Italian name of the Jessamine.) 



1. G. seinp6rvirens, Ait. (Yellow Jessamine of the South.) Stem 

 climbing high ; leaves short-petioled, shining, nearly persistent ; flowers in 

 short axillary clusters ; pedicels scaly-bracted ; flowers very fragrant (the bright 

 yellow corolla I'-l^' long); pod flat, pointed. — Low grounds, Eastern Vir- 

 ginia and southward. March, April. 



2. POLYPREMUM, L. Polypbemum. 



Calyx 4-parted ; the divisions awl-shaped from a broad scarious-raargined 

 base. Corolla not longer than the calyx, almost wheel-shaped, bearded in the 

 throat ; the 4 lobes imbricated in the bud. Stamens 4, very short : anthers 

 globular. Style 1, very short : stigma ovoid, entire. Pod ovoid, a little flat- 

 tened, notched at the apex, 2-celled, loculicidally 2-valved, many-seeded. — A 

 smooth, diffuse, much-branched, small annual, with narrowly linear or awl- 

 shapcd leaves, connected at their base across the stem by a slight stipular line; 

 the small flowers solitary and sessile in the forks and at the ends of the 

 branches ; corolla inconspicuous, white. (Name altered from voXiirpcfjivos, 

 many-stemmed. ) 



I. P. proctunbens, L. — Dry fields, mostly in sandy soil, Maryland and 

 southward ; also adventive at Philadelphia, June - Oct. 



