304 ACANTIIACE^E. (aCANTDUS FAMILY.) 



C. D. strepens, Nccs. Smooth, pubescent, or hairy ; leaves varyin;^ from 

 laneeohitc to orbiouhir, mostly narrowed into a petiole ; llowcrs !^cssilc or pedun- 

 clcd ; tube of the corolhv barely lonfjer than the linear or linear-lanecolute hairy 

 calyx-lobes, and about the length of the funnel-shaped throat ; capsule smooth. 

 (Ruellia strepens, L.) — Dry rich soil, Florida, and northward. June -Sept. — 

 Stem 2' -3° high. Leaves 1'- 4' long. Corolla 1'- 2' long, blue or jjurplc. A 

 polymorphous species. Later flowers sometimes fruiting iu the bud. 



7. D. noctiflorus, Nees. Closely pubescent ; stem simple, rigid ; leaves 

 oblong or lanceolate, sessile, entire or slightly toothed ; flowers solitary, pcdiin- 

 cled ; corolla large ; the elongated tube twice as long as the linear hairy calyx- 

 lobes ; capsule pubescent. — Low grassy pine barrens, Florida, Georgia, and 

 westward. July and Aug. — Stem 1° high. Corolla 2' -4' long, white. 



3. DIANTHERA, Gronov. 



Calyx 5-partcd. Corolla bilabiate; the upper lip cmarginatc; the lower 3- 

 lobcd, rugose or veiny in the middle, spreading. Stamens 2 : anther-cells sep- 

 arated, one placed lower down than the other. Stigma simple, acute. Capsule 

 flattened, narrowed downward, bearing the seeds above the middle. Seeds 

 mostly 4, supported by the appendages of the placent:c. — Perennial smooth 

 herbs, with opposite entire leaves, and siiort-bracted mostly alternate flowers in 

 long-pedunclcd axillary spikes. 



1. D. Americana, L. Stem tall, angled ; leaves long, lincar-lanceolatc ; 

 spikes oblong, dense or somewhat capitate, on peduncles as long as the leaves. 

 (Justicia cnsiformis. Ell.? J. pedunculosa, il//c//x.) — In slow-flowing streams, 

 South Carolina, and northward. July and Aug. — Stem 2° high. Leaves and 

 peduncles 4'-G' long. Sj)ike i' long. Flowers pale purple. 



2. D. OVata, Walt. Stem low (4'-8' high), 4-anglcd; leaves ovate-lance- 

 olate, rather acute, narrowed into a short petiole ; the lowest small, lanceolate ; 

 spikes 3-4-flowercd, on simple peduncles shorter than the leaves; corolla small, 

 pale purple, the lower lip stiipcd with deeper lines. (Justicia humilis, ^ficllT.) — 

 Muddy banks of streams, Florida to South Carolina. — Leaves 2' -4' long, 

 I'-U' wide. 



Var. lanceplata. Stem taller (1°-!^'^); leaves smaller, lanceolate, acu- 

 minate, nearly sessile ; peduncles longer than the leaves ; spikes many-flowered, 

 1 -sided, often branching. — River-banks, Florida. July. 



Var. ? angUSta. Leaves liniar or linear-lanceolate, rcflcxcd, the lower ones 

 very remote ; [icdundcs as long as the leaves ; spikes several-flowered, the 

 lower flowers ofien ojjposite. — Pine-barren ponds, Florida. May. — Stem P 

 high. Leaves I ' - 2' long. Corolla 4" - .'i" long. 



3. D. crassifolia, n. sp. Stem rigid, angled ; leaves fleshy, linear, chan- 

 nelled, acute ; tiic lower distant, small and obtuse ; jjeduncles stout, erect, longer 

 than the leaves, exceeding the stem ; spike few-flowered ; corolla large, bright 

 purple; the lower lip striped with deeper lines ; capsule 2-seeded ; seeds circular, 

 smooth. — Wet pine barrens, A])alachicola, Florida. April and May. — Stem 

 6'- 12' high. Leaves 4'- C long. Peduncles 4'- 9' long. Corolla and capsule 

 I' lone 



