318 LENTIBULARIACE^. Pinguicula. 



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

 salient. — Fl. i. 11; Pursli, Fl. i. U; Ell. Sk. i. 19. P. australls, Niitt. in Jour. Acad. 

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

 Florida and Louisiana. 

 P. elatior, Michx. Leaves oblong or spatulate-obovate, 1 to o 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. ; Vald, Enum. i. 191; Pursh, 1. c. ; Ell. 

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



* * * Corolla golden yellow, not bilabiate, e.xcept that the two upper lobes arc commonly more 

 united, all or most of the lobes incisely 2— t-cleft, equal : stigma of the preceding, or lips less 

 uiie(|u.-il. — Brandunid, Reichenb. 



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

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

 tube with the saccate base, ail or the lower and lateral usually 4-lobed or 2-clcft with the 

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

 palate oblong, very salient, densely beai-ded. — Car. 63; Michx. 1. c ; Ker, Bot. Reg. t. 

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

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



Var. edentula, A.DC, 1. c. {P. edeutula, Rook. 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. pumlla. 



Order 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, indefluitely numerous, 

 on parietal placentas, 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 a[)[)ears 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 sometimes an axillary pair of leaves 

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

 American. 



* Leaves opposite, compound : perfect stamens 4 : seeds transversely winged, hypogynous 

 disk conspicuous : stems mostly scandent. 



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

 late or cylindraceous-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, niarginicidal and septifragal, a filiform margin usually 

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

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

 dril-climbers. 



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

 above the short proper tube, somewhat bilabiately 5-lobed. x\nther-cells divergent, 

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

 septifragal ; the valves contrary to the partition. Seeds imbricated in one or two or more 

 series on each side of the margins of the jiartition ; tlie wing iiyaline. IvDotlet-climbing or 

 erect slirubs ; flowers in terminal panicles or corymbs. 



