LEXTIBULARIACEAE. 393 



11. BUCHNERA L. Sp. PI. G: j .O. 1753. 



Erect, perennial or biennial, strict hispid or scabrous herbs, blackening in 

 drying, the lower leaves opposite, the upper sometimes alternate. Flowers 

 rather large, white, blue, or purple, in terminal bracted spikes, the lower com- 

 monly distant. Calyx tubular, or oblong, 5-10-nerved, 5-toothed. Corolla sal- 

 verform, its tube cylindric, somewhat curved, its limb nearly equally 5-eleft, 

 spreading, the lateral lobes exterior in the bud. Stamens 4, didynamous; 

 anther-sacs confluent into 1. Style slender, thickened or club-shaped above; 

 stigma small, entire or emaiginate. Capsule loculicidally dehiscent. Seeds 

 numerous, reticulated. [Named for J. G. Buehner.] About 30 species, of 

 warm and temperate regions. Type species: Buchnera americana L. 



1. Buchnera elongata S\v. Prodr. 92. 1788. 



Stems rough-hispidulous, 2-5 dm. high, simple or branched above, slender. 

 Leaves scabrous, sparingly toothed or entire, the basal ones obovate or oblong, 

 short-petioled, 1-3 cm. long, those of the stem oblong to linear, 1.5-8 cm. long; 

 spikes slender, distantly-flowered; calyx 5-6 mm. long, hispidulous, its upper 

 lobes triangular, acute; corolla blue or white, 9-12 mm. long, its tube some- 

 what pubescent ; capsules ovoid, 5-7 mm. long. 



Pine-lands and savannas. Great Bahama. Andros and New Providence : Florida ; 

 Jamaica ; Cuba ; Hispaniola ; continental tropical America. Buchnera. 



VBBBASCUM pulverulextum Mill, is recorded from Green Turtle Cay, Abaco, by 

 Herrick. The specimen cannot be found among his plants nor has any species of the 

 genus been seen by our collectors in the archipelago. 



Linaria vulgaris Mill. Is reported by Dolley to be naturalized in the Bahamas. 

 While this may be possible neither Mr. Brace, nor any of our other collectors, has 

 seen the plant on the islands. It may have been cultivated. 



Family 11. LENTIBULARIACEAE Lindl.* 



Bladderwort Family. 



Aquatic plants, or terrestrial on moist ground, with the leaves basal 

 and tufted, or borne on branching stems. Scapes erect. Flowers perfect, 

 irregular. Calyx inferior, 2-5-parted. Corolla 2-lipped, spurred or sac- 

 cate at the base. Stamens 2; anther-sacs confluent into 1. Ovary superior, 

 ovoid or globose, 1-celled, with a free-central placenta; ovules numerous; 

 style short or none; stigma 2-lamellate. Fruit a capsule, irregularly burst- 

 ing, or dehiscent by valves. Seeds reticulate, or variously sculptured or 

 appendaged; endosperm none. About 1G genera and 300 species, widely 

 distributed. 



Scape with scales, or bracts, or both, 1 -many-flowered ; calyx 

 2-parted ; corolla with a prominent palate, closing the throat. 

 Pedicels several times as long as the bracts at their bases; 

 bractleta none. 

 Bracts attached by the base; lower corolla-lip faintly lobed. 1. Utricularia, 

 Bracts peltate; lower corolla-lip divergently 3-lobed. 2. Betiecapella. 



Pedicels- barely if at all exceeding the bracts; a pair of lateral 



bractlets as well as a bract at the base of each pedicel. 3. Stomoisla. 



Scape naked. 1 -flowered; calyx 5-parted; corolla with a subulate 



palate within the tube, or none, the throat open. 4. I'iiuiuicula. 



Contributed by Dr. John H. Barnhart. 

 26 



