LOGANIA FAMILY. 273 



4. BAB,T6ITIA. (Named for Prof. B. S. Barton, of PhUadelphia. ) In- 

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

 flowers. ® @ 



B. teil611a. Woods : 5' - 10' high, with branches or peduncles 1 - 3-flow- 

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



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

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



5. MENTANTHES, BUCKBEAN. (Name from Greek words for 

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

 leaves, somewhat resembling those of the Horsebean.) 



M> trifoli^ta. Cold wet bogs N. : fl. late spring ; corolla white or tinged 

 with pink ; scape hardly 1° high. 'y. 



6. LIMNANTHEMUM, PLOATING-HEAET. (Name formed of 

 Greek words for swamp and bhssrnn. ) 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, 



Ii. lacunbsum, is common E. & S. : leaves 1' - 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, roughish or dark-pitted beneath ; petioles stouter ; 

 seeds roughened. 



86. LOGANIACE^, 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 tunning climber, with evergreen leaves and ihovjy flowers. 

 1 GELSEMTOM. Calyx 5-parted. CoroUa open ftmnel-form, the 5 lobes broad 

 and imbricated in the bud. Stamen* 5: anthers sagittate. Style slender: 

 stigmas 2, each 2-parted, lobes Imear, ovarv 2-celled. Pod oval, flattened 

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



§ 2. Herbs, not climbing. 

 2. SPIGELIA. Calyx 5-parted, the lobes narrow. Corolla tnbular and some- 

 what funnel-fo^, the 5 lobes valvate in the bud. Stamens 5: anthers linear. 

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

 2-ceUed| few-seeded, when ripe separating across near the base which is lett 

 behind, and splitting 2 or 4 valves. „ . . . j „„^ 



MITREOL A, ofthe South, comprises a couple of qmte inconspicuous weeds, and 

 POLYPBEMUM, also S. is a common weedy plant; — both wholly msignificant, 

 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 different order from true Jessamine. 



Q. semp6rvirens, our only species : low grounds from E. Virg S., climb, 

 ing treesTearing shin ng lance-ovate small leaves (evergreen tar S.), and a 

 pilfiision of axillary clusters of bright yellow very fragrant handsome flowers 

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



2. SPIGELIA, PINK-ROOT or WOEM-GRASS. (Named for Adrian 

 'Spiegel, latinized Spigelius.) Fl. summer. 



S Mariltodica, Maryland P. Rich woods, from Penn. W. & S- : 

 neariy'^S:'?' - iV. high ; l-es sessile, lance-ovate.^a^^^^^^^^^^ 

 sim 



Boot used as a vermifdge. % 



a 



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

 Ami rCL spike-like^clusters terminating the stem or^\-^^^:^^^^ 

 U'Wg, slender, handsome, red outside, yeUow withm, the lobes lanceolate. 



18 



