GENTIAN FAMILY. 291 



2. SPIGELIA, PLNKROOT, WORM GRASS. (Named for Adrian 

 Spiegel, Latinized Spigelius.') Flowers summer, y. 



S. Marilandica, Linn. Rich woods, from N. J., W. and 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 lance- 

 olate. Root used as a vermifuge. 



LXXV. GENTIANACEE, GENTIAN FAMILY. 



Known generally from the other monopetalous plants with 

 free ovary by the 1-celled ovary and pod with 2 parietal pla- 

 centae covered with small seeds, along with regular flowers, 

 having stamens as many as the lobes of the corolla and alternate 

 with them, and the leaves opposite, simple, entire, and sessile, 

 without "stipules. The exceptions are that in some cases the 

 ovules cover the whole inner face of the ovary, and in one 

 group the leaves are alternate and even compound. They are 

 nearly all very smooth and bitter-tonic plants, with colorless 

 juice, the calyx persistent. Ours herbs, none in common 

 cultivation. 



* Leaves opposite or whorled and entire, sessile. Corolla with the lobes mostly con- 



volute m the bud, sometimes also plaited in the sinuses. 

 +■ Style slender, deciduous from the pod; anthers soon curving. 



1. 8ABBATIA. Calyx 5-12-parted, the divisions slender. Corolla wheel-Bhaped, 5-12- 



parted. Style 2-parted. Pod globular, many-seeded. Slender herbs. 



*■+■ Stout style (if any) and stigmas persistent on the pod; anthers remaining 



straight. 

 ++ CoroUa lobes mostly bearing an appendage or a plait in the sinus. 



2. FRA8EKA. Calyx and corolla deeply 4-parted, wheel-Bhaped ; divisions of the latter 



with a glandular and fringed spot or pit on their middle. Pod oval, flattened, rather 

 few-seeded ; seeds large and flat, wing-margined. Large thick-rooted herbs, with 

 whorled leaves and panicled flowers. 

 8. GENTTANA. Calyx 4-5-deft. Corolla 4-5-lobed, often with teeth or salient folds at 

 the sinuses, usual'y withering persistent. Style short or none ; stigmas 2, persistent. 

 Pod oblong, containing Innumerable small seeds with loose cellular or winged coat. 

 Flowers solitary or clustered, mostly showy. 



++ ++ No appendages. 



4. BAETONIA. Calyx 4-parted. Corolla deeply 4-cleft. Style none. Pod oblong, flat- 



tiBh, the minute innumerable seeds covering its whole inner face. Flowers very 

 small. Leaves reduced to little awl-shaped scales. 



5. OBOLAEIA. Calyx of 2 leafy sepals. Corolla persistent after withering, 4-cleft, the 



lobes imbricated in the bud. Style short and persistent, the stigma 2-lipped. Sta- 

 mens short, inserted at the sinuses of the corolla. Low half-fleshy herbs with wedge- 

 obovate opposite small leaves. 



• * Leaves alternate, long petioled. Corolla with the lobes valvate and the edges 



turned inwards in the bud. Seeds many or few, with a hard or bony coat. 



6. MENYANTHE8. Calyx 6-parted. Corolla very short funnel form, 5-lobed, white- 



bearded over the whole upper face. Style slender, persistent ; stigma 2-lobed. Pod 



