318 LENTIBULARIACE^. Pinguicula. 



narrow saccate base; lobes retuse or emarginate; palate puberulent-bearded, conical, 

 salient. — FI. i. 11; Pursh, Fl. i. 14; Ell. Sk. i. 19. P. australis, Nutt. in Jour. Acad. 

 Pliilad. vii. 103, tiie spur by no means "very short." — Low pine-barrens, Carolina to 

 Florida and Louisiana. 

 P. elatior, Michx. Leaves oblong or spatulate-obovate, 1 to 3 inches long : scapes 6 to 

 12 inches high : corolla an inch long or considerably smaller ; spur obtuse, mostly shorter 

 than the saccate base ; lobes obcordate ; palate oblong, parallel with the throat, the short 

 free apex more conspicuously bearded. — Fl. 1. c. ; Vahl, Enum. i. 191 ; Pursh, 1. c. ; Ell. 

 1. c. — Wet soil, Carolina to Florida and Alabama in the low country. 



* * * Corolla golden vello'w, not bilabiate, except that the two upper lobes arc commonly more 



united, all or most of' the lobes incisely 2-t-cleft, equal: stigma of the precedmg, or lips less 



unequal. — Brandonia, Reichenb. - ■ 



P. lutea, Walt. Leaves from ovate to oblong-obovate, an inch or two long : scapes 5 to 



12 inches high: corolla an inch or less long; the lobes longer than the short-campanulate 



tube with the saccate base, all or the lower and lateral usually 4-lobed or 2-clef t with the 



divisions obcordate, or variously sinuate; spur subulate, as long as the sac and tube; 



palate oblong, verv salient, densely bearded. — Car. 63; Michx. I.e.; Ker, Bot. Reg. t. 



126 • Ell. 1. c. ; A.DC. Prodr. viii. 32. P. campanulnta, Lam. in Jour. Hist. Nat. 1792, 336, 



t 18 fig. 1. — Low pine barrens, N. Carolina to Florida and Louisiana. 



V'ar. edentula, A.DC, 1. c. (P. edentula, Hook. Exot. Bot. t. 16, cult, from Savan- 

 nah), has lobes of corolla all simply and equally obcordate, shorter than the tube. Possibly 

 a hybrid of P. lutea and P. pumila. 



Obdeb XCIX. BIGNONIACEiE. 



Trees or shrubs, either erect or scandent (very rarely herbs), with mostly oppo- 

 site leaves, and large and showy flowers, with more or less bilabiate corolla, tetra- 

 dynamous or diandrous stamens, single style and bilabiate stigma, and numerous 

 anatropous ovules of the preceding orders'; distinguished from them by the large 

 and flat usually winged and transverse exalbuminous seeds, indefinitely numerous, 

 on parietal placentjje, or usually on a partition which separates from the two valves 

 of the capsule in dehiscence, although in the ovary and when the ovules are in 

 many rows the placentation often appears to be central ; the cotyledons broad 

 and thin, plane, commonly emarginate or 2-lobed, and the short straight radicle 

 included in the basal notch. Capsule either loculicidal or septicidal, often silique- 

 like. Anthers 2-celled : suppressed stamens commonly represented by rudimen- 

 tary filaments. Corolla bilabiately imbricated in the bud (in our genera, in a few 

 others valvate). Calyx gamosepalous. Leaves compound, or in two of our genera 

 simple ; sometimes a pair of basal leaflets and some.times an axillary pair of leaves 

 imitate stipules. Chiefly a tropical and rather large order; but few North 

 American. 



* Leaves opposite, compound : perfect stamens 4 : seeds transversely winged, hj-pogynous 

 disk conspicuous : stems mostly scandent. 



1 BIGNONIA Calyx with undulate or barely 5toothed margin. Corolla campanu- 

 ■ late or cyHndraceous-ampliate above the narrow and short proper tube, somewhat equally 



bilabiate-5-lobed. Anther-cells divergent, glabrous. Capsule linear compressed parallel 

 with the flat valves and partition, marginicidal and septifragal, a filiform margm usually 

 separating all round both from the edges of the valves and the partition. Seeds attaclied 

 in a single series on each side of both margins of the partition ; the thin wmg entire. Ten- 

 dril-climbers. 



2 TECOMA Calyx distinctly 5-toothed. Corolla funnelform or somewhat campanulate 

 ' above the short proper tube, somewhat bilabiately 5-lobed. Anther-cells divergent 



glabrous or sparsely pilose. Capsule narrow, somewhat terete or turgid, loculicidal and 

 lentifragal ■ the valves contrary to the partition. Seeds imbricated in one or two or more 

 series on each side of the margins of the partition ; the wing hyaline. Rootlet-cliiiibing or 

 erect shrubs; flowers in terminal panicles or corymbs. 



