134 PIXGUICULACEAE. 



Calyx-lobes linear to lanceolate : anther-sacs pointless : capsule 



G-20-seeded. 2. Ruellia. 



Corolla strongly 2-lipped ; lobes erect : stamens 2. 3. Diapedium. 



1. DYSCHORISTE Xees. Herbs or woody plants: leaf -blades entire. 

 Flowers solitary or clustered in the axils. Calyx-lobes 5, very slender. Corolla 

 blue, purple, or rarely wMte, slightly 2-lipped. Capsules 2-4-seeded. [Calo- 

 phanes D. Don.] 



1. D. angusta (A. Gray) Small. Steins 1-2 dm. tall: leaves numerous; blades 

 1-2.5 em. long, spatulate below to linear-oblong or linear above: calyx-lobes 

 linear-subulate, 9-11 mm. long: corolla-limb about 10 mm. wide: capsules 7-8 

 mm. long. — Pinelands and open sandy hammocks, L. keys. — [E. K.] 



2. RUELLIA [Plum.] L. Caulescent herbs. Leaf-blades entire or 

 toothed. Flowers axillary or sometimes in terminal clusters. Calyx 5-lobed, 

 the lobes narrow. Corolla nearly regular. Capsules 6-20 seeded. 



1. E. hybrlda Pursh. Stems 2-6 dm. tall, more or less diffusely spreading, 

 closely gi-ayish-pubescent : leaf -blades ovate to oblong, 2.5-5 em. long or larger: 

 calyx minutely hirsute or caneseent-hirsute; lobes linear-filiform, 10-15 mm. 

 long or more: corolla light-blue, or whitish, 2.5-5 cm. long: capsules less than 

 15 mm. long. — Pinelands and open hammocks, L. keys. 



3. DIAPEDIUM Konig. Annual or usually perennial herbs. Leaf -blades 

 entire. Flowers in conspicuously bracted spikes. Calyx 5-lobed, the lobes 

 narrow, nearly equal. Corolla 2-lipped, the upper lip erect. Filaments elon- 

 gate. Capsule with an ovoid or suborbicular body. 



1. D. assurgens (L.) Kuntze. Plants 3-11 dm. tall, often diffuse: leaf-blades 

 ovate to elliptic or oblong-lanceolate, 2-10 cm. long: calyx 3-4 mm. long; lobes 

 lanceolate : corolla crimson or red, 2-2.5 cm. long : capsules 7-8 mm. long. — 

 Hammocks, U. keys, L. keys, L. S. keys. — (Bah., Cuba, Ant.) 



Family 12. PINGUICULACEAE.i Bladderwort Family. 



Herbs growing in water or wet places. Leaves submersed and dis- 

 sected, sometimes resembling rootlets and often bladder-bearing; or aerial, 

 basal, entire ; or rarely, wanting. Scapes naked or minutely scaly. Flowers 

 irregular, perfect. Calyx of 2-5 herbaceous sepals. Corolla 2-lipped : tube 

 spurred or saccate. Androecium of 2 stamens, adnate to the corolla-tube 

 on its upper side. Filaments flattened, twisted. Anthers confluently 

 1-eelled. Gynoecium a single 1-celled pistil, with a free-central usually 

 globose placenta. Style thick. Stigma often unequally 2-lii)ped. Fruit 

 a capsule, 2-valved or irregularly dehiscent. 



1. PINGUICULA [Tourn.] L. Terrestrial scapose herbs. Leaves in a 



basal rosette: blades flat. Scapes usually several, 1-flowered, without scales or 



bracts. Sepals 5, more or less united. Corolla spurred at the base, the palate 



subulate, included in the tube. 



1. P. pumila "Michx. Leaves clammy-pubescent: scapes very slender, 5-20 em. 

 tall: corolla 1-2 cm. broad; spur subulate, about 3 mm. long, longer than the 

 sac-like base of the corolla. — Low pinelands, L. keys. — [E. K.] — {Bah., Cuba.) 



— BUTTERWORT. 



^ Contributed by Dr. John Ilendley Barnhart. 



