234 OHDEU 85). ACAXT1IACE.E. 



Caps, narrow. Seeds 4 16, resting on hooks, y Low, with tumid join la, 

 opposite leares, and showy axillary blue, purple, or white flowers. 



DJPTERACANTHIJS. Anthers pointless. Style bifid. Seeds 8 12 Nos. 1-8 



$ CAI.6PHANE9. Anthers pointed at base. Style simple. s., t .,)8 4. South... (a) 



a Stems erect from a creeping base, with obtuse 1 aves Nog. 4, 5 



a Stems creeping, diffuse, with the leaves entire Nos. 6, 7 



I R. strepens L. Erect, smoothish, with obovate to oblong-petiolatp 'vs ; pod. very 

 chert, 1^-flowered ; bractlets as long as the narrow sepals, little tnon.e, -in the 

 slender corolla tube. Dry soils, W. and S. 016'. Leaves 2 5'. June, Jui>. 

 2 R. rillosa Ph. Erect, white-hairy, with Ivs. obovate to oblong, abrupt at base and 

 subsessile ; bractlets and sepals not half as long as the tube of the corolla. Rich 

 soils. W. and S. If or more. Leaves 12'. Flowers 2 2f. June September. 

 j3. hi'jliriilus. Low, decumbent, and very hairy. Georgia (Dr. Feay). 



3 K. tublflora Le Conte. Downy; leaves oblong to lanceolate, sessile ; fls. solitary; 



sep. lance-linear, ^ as long as the long tube of the white cor. Ga., Fla. June Aug. 



4 K. oblougifolla MX. Very downy; Ivs. obovate to oval, subsessile ; fls. 13 to 



gethcr, bractlets and sepals as long as tube of the spotted corolla. Dry, Ga., Fla. 

 a R. rlparla (Chapm.) Smoothish, simple ; Ivs. oblong, petiolate ; flowers clustered, 

 small ((>"). white, bractlets, sepals, and corolla tube equal. Mid. Fla. 12 18'. 



6 R. Iimiiistrata MX. Smooth; Ivs. oblong-oval, petiolate; flowers 1 3 together, 



bractlets shorter than the setaceous sepals. Rich soils, S. Car. to Fla. 



7 R. linearis T. & G. Small, rough-downy ; leaves linear-oblong, imbricated, tho 



bractlets similar ; capsule 4-angled, with 2 I seeds. S. Fla. 



4. HYGROFHILA, R Br. Calyx half-5-cleft, with narrow segments 

 Cor. ringent, lower lip trifid. S*a. 4, unequal, cells of the anth. divergent- 

 sagittate, violet. Stig. subulate. Caps, terete, co-seeded. U z? Stolonif- 

 erous, 4-angled. Flowers clustered in the axils. (See Addenda.) 



if. lac list rig Nees. Erect, simple, smooth ; leaves lance-oblong, sessile (3 4'); flu. 

 sessile, appearing whorled, white. Borders of lakes. New Orleans. 1 2f. 



5. DICLIPTERA, Juss. Fls. in bracted heads. Cal. 5-parted. Cor. 

 bilabiate, inverted, upper lip 3-toothed, sta. 2, anth. cells equal, one placed 

 above the other. Caps. 4-seeded, the partitions and valves separating, y 



1 I>. bracliiata Spr. Smooth ; st. C-angled, brachiately branched ; leaves lanceo- 



late, long-petiolate, acuminate ; heads few-flowered, the tipper approximate, sessile, 

 lower often pedunculate ; flowers purple, 5 6". River banks, S. 1 2f. June Aug. 



2 D. Hal el Riddell. St. downy, mostly simple ; leaves lance-ovate, petiolate ; bract 



lets and sepals fringed with long hairs ; corolla 5" long. Fla. to La. 1 2f. Jn. Aug. 



3 -D. assurgeiifi Juss., with scarlet (!') corollas in 1-sided spikes, grows in S. Fla. 



6. DIANTHERA, Gron. (Rhytiglossa, Nees, and C-B.) Cal. 5-parted. 

 Cor. bilabiate, upper lip notched, lower 3-lobed. Stamens 2, anth. cells un- 

 equal, one placed above the other. Capsule flattened, 4-seeded above the 

 middle. H z? Lvs. smooth, entire. Flowers in bracted spikes or heads. 



1 D. Americana L. Erect, angular, tall; leaves long-lanceolate, wavy, as long 

 (3 4') as the peduncles ; bracts and sepals lanceolate, 3", the ringent corolla 0", 

 violet-purple. Banks. N. Y., W. and S. 2 3f. June. July. 



X D. enslformis Wood. Erect from a creeping base, slender; leaves linear, oblique 

 or ensiform, thick, shorter (3 4') than the peduncles ; flowers spicate ; calyx 6" : co- 

 rolla purple, 1'. Fla. April. (D. crnssifolia Chapm.) 



