304 acantii \< 1..1;. (acanthus family.) 



6. D. strepens, Nees Smooth, pubescent, or hairy ; leaves varying from 

 lanceolate to orbicular, mostly narrowed into a petiole ; flowers sessile or pedun- 

 cled ; tube of the corolla barely longer than tlie linear or linear-lanceolate hairy 

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

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

 Stein 2 ; -8° high. Leaves l'-4' Long. Corolla l , -2' long, blue or purple. A 

 polymorphous species. Later flowers sometimes fruiting in the bud. 



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

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

 eled ; 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-parted. Corolla bilabiate; the upper lip emarginate; the lower 3- 

 lobed, 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 placenta. — Perennial smooth 

 herbs, with opposite entire leaves, and short-braeted mostly alternate flowers in 

 long-pcduncled axillary spikes. 



1. D. Americana, L. Stem tall, angled ; leaves long, linear-lanceolate ; 

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

 (Justicia ensiformis, Ell. ? J. pedunculosa, Michx.) — In slow-flowing streams, 

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

 peduncles 4'-G' long. Spike £' long. Flowers pale purple. 



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

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

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

 pale purple, the lower lip striped with deeper lines. (Justicia humilis, Michx.) — 

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

 1'-1V wide. 



Var. lanceolata. Stem taller (l°-l.] c ) ; leaves smaller, lanceolate, acu- 

 minate, nearly senile ; peduncles longer than the haves ; spikes many-flowered, 

 l-eided, often branching — River-hanks, Florida. July. 



Var. ! angUSta. Leaves linear or linear-lanceolate, reflexed, the lower ones 

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

 lower flowers often opposite. — Fine-barren ponds, Florida. May. — Stem 1° 

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



■" B. crassifolia, n. sp. Stem rigid, angled ; leaves fleshy, linear, chan- 

 nelled, acute ; the lower distant, small and obtuse; peduncles stout, erect, longer 

 than the leaves, exceeding tin' -teiii ; spike few-flowered; corolla huge, bright 



purple; die lower lip striped with deeper lin^s ; capsule 2-seeded; seeds circular, 



smooth. — Wei pine barn us, Apalachieola, Florida. April and May.- Stem 



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

 i' long. 



