LOGANIA FAMILY. 273 



4. BARTdNIA. (Named for Pref. B. S. Barton, of Philadelphia.) In- 

 significant herbs, with awl-shaped scales for leaves, and a few peduncled white 

 flowers. (T) ® 



B. ten^lla. Woods : .5'- 10' high, with branches or peduncles 1 -3-flow- 

 ered; lobes of corolla oblong, aciitish ; ovary 4-angled : fl. summer. 



B. v6riia. Bogs, only S. : smaller, less branched, 1 - few-flowered ; flowers 

 larger, in early spring ; lobes of corolla spatulate, obtuse ; ovary flat. , 



6. MENYANTHES, BUCKBBAN. (Name from Greek words for 

 month a.aA flower ; application not obvious. The popular name from the 

 leaves, somewhat resembling those of the Horsebeau.) 



M. trifbli^ta. Cold wet bogs N. : fl. late spring ; corolla wMte or tinged 

 with pink ; scape hardly 1° high. 2/ 



6. LIMNANTHEMUM, FLOATING-HEART. (Name formed of 

 Greek words for swamp and blossom.) But our species grow in water, and pro- 

 duce through the summer the small white flowers, accompanied by spur-like 

 thick bodies, probably of the nature of roots, y. 



L. lacuubsum, is common E. & S. : leaves l'-2' long, on very slender 

 petioles, entire ; lobes of corolla broadly oval ; seeds smooth and even. 



L. trachyspdrma, in deeper water, from Maryland S. : leaves rounder, 

 2' -6' broad, wavy-margined, ronghish or dark-pitted beneath ; petioles stouter ; 

 seeds roughened. 



86. LOGANIACE^ffi, LOGANIA FAMILY. 



Known among monopetalous plants by having opposite leaves 

 with stipules or a stipular line between their bases, along with a 

 free ovary ; the flower regular or nearly so, and stamens as many 

 as the lobes of the corolla and alternate with them. 



§ 1. Woody iwinlng climber, with evergreen leaves and showy Jlowers. 



1. GELSEMIUM. Calyx 5-parted. Corolla open funnel-form, the 5 lobes broad 



and imbricated in the bud. Stamens 6: anthers sagittate. Style slender; 

 stigmas 2, each 2-parted, lobes Jinear, ovary 2-ceUaa. ,Pod oval, flattened 

 contrary to the partition, 2-valved, many-seeded. Seeds winged. 



§ 2. .Serbs, nut climbing, 



2. SPI6ELIA. Calyx B-parted,- the lobes narrow. Corolla tubular and some- 



what funnel-form, the 5 lobes valvate in the bud. Stamens B ; anthers linear. 



Style 1, slender, hairy above, jointed near the middle. Pod shortj twin, 



2-celled, few-seeded, when ripe separating across near the base which is left 



behind, and splitting 2 or 4 valves. 

 MITREOLA, or the South, comprises a couple of quite inconspicuous weeds, and 

 POLYPREMUM, also S. is a common weedy plant; — both wholly insigniiioant, 



as well in the herbage as in the minute white flowers. 



1. GELSEMIUM, YELLOW JESSAMINE of the South, the name an 

 Italian one for Jessamine, but of a diflferent order from true Jessamine. 



G. Seilip6rvirens, our only species : low grounds from E. Virg. S., climb- 

 ing trees, bearing shining lance-ovate small leaves (evergreen far S.), and a 

 profusion of axillary clusters of bright yellow very fragrant handsome flowers 

 (I' or more long), in early spring. 



2. SPIGELIA, PINK-KOOT or WORM-GRASS. (Named for Adrian 

 Spiegel, latinized Spigelius.) Fl. summer. 



S. Mariltodiea, Maryland P. Rich woods, from Penh. W, & S.: 

 nearly smooth, 6' — 18' high; leaves sessile, lance-ovate, acute; flowers in 

 simple or forked spike-like clusters terminating the stem or branches ; corolla 

 1^' long, slender, handsome, red outside, yellow within, the lobes lanceolate. 

 Root used as a vermifnge. y. 

 18 



