280 XCII. ACANTHACER. 
have adopted the arrangement of Dr. T. Anderson, given in Pro- 
ceedings of Linn. Soc., vol. vi., Bot., p. 18.) 
Suborder 1. Thunbergideze. Calyx reduced to a fleshy, entire or se- 
veral-toothed ring. Lobes of corolla twisted in estivation. Seeds sub- 
tended by a cup-like process.—Climbing or prostrate, rarely erect plants. 
Calyx inconspicuous, hidden under 2 large, leafy 
Dracts.. (ee eee we hoe |e iw ce) ole 1. THONBERGTA. 
Suborder 2. Ruellideze. Calyx herbaceous, 5- rarely 4-parted. Corolla 
with twisted estivation. Seeds subtended by arigid hooked process, or by 
a small nipple.—Not climbers. 
Bracts minute or 0 ; capsules subterete. 
Corolla straight ; anthers 2-spurred at base ; cap- 
sules linear, acute, 4-seeded at apex . . . . 2. CALOPHANES. 
Corolla straight or curved; anthers not spurred ; 
capsules tumid above, subglobose, many-seeded. 3. RUELLIA. 
Bracts 2, large, covering the unopened corolla; 
capsules obovate, shortly constricted at base, 
dorsally compressed. 
Bracts membranous, veiny; calyx pees : 
flowers solitary. . . 4, PETALIDIUM. 
Bracts subherbaceous ; calyx 4 -parted ; flowers 
in lateral cymules . . . 5. PSEUDOBARLERIA. 
Bract solitary, large; 2 short bracteoles ; : calyx un- 
equally 5-parted ; flowers in dense spikes . . 6. PHAYLOPSIS. 
Suborder 3. Acanthideze. Calyx herbaceous, 5- rarely 4-parted. Co- 
rolla with imbricate or imbricate-2-labiate estivation. Seeds subtended by 
a rigid, hooked process. 
1. Bartertem. Corolla salver-, funnel-, or bell- 
shaped, subequally 5-lobed ; lobes with imbri- 
cate eestivation. 
Calyx 4-parted ; corolla funnel- or salver-shaped ; 
stamens 2-4. . 7. BARLERIA. 
Calyx 5-parted ; corolla bell- -shaped ; stamens 4 
ovules 4-8 . 8. CRABBEA. 
2. ACANTHE®. Corolla 1- labiate, 3-5- lobed ; sta 
mens 4; anthers 1-celled. 
Calyx cruciately 4-parted. 
Tube of corolla very short. 
Upper calyx-lobe entire, 3-nerved, lower 2- 
nerved; capsules with membranous-valves. 9. BLEPHARIS. 
Upper calyx-lobe 4- or ee errr cap- 
sule papery . . . 11. AcanTuHoUs. 
Tube of corolla long ; upper calyx- lobe obso- 
letely 6-nerved, lowey 6-nerved. . . . . 10. ACANTHOPSIS. 
Calyx 5-parted, scarious, veinless ; corolla 5- 
lobed . . .. . . « 12, SCLEROCHITON. 
3. JUSTICIER. Corolla. 2-lipped ; ‘fertile stamens 
2; anther-cells more or less superposed. 
Corolla-tube short, straight ; lower lip 3-fid, the 
medial lobe larger than the lateral; upper lip 
shortly 2-dentate ; stamens 2. 
