ACANTHACEAE. 133 



Corolla tubular-campanulate, pink or rose-purple: lobes all spreading, shorter 

 than the tube. Style filiform. Capsule globose. 



Flowering pedicels shorter than or equalling the bracts : seeds dark-brown : plants 



blackening in drying : calyx-tube not reticulate-veined ; lobes not callose. 

 Stem smooth or sparingly scabrellous : axillary fascicles of leaves inconspicuous. 



1. A. purpurea. 



Stem scabrous : axillary fascicles of leaves conspicuous. 2. A. fasciculata. 



Flowering pedicels longer than the bracts : seeds yellowish-brown : 

 plants not blackening in drying : calyx-tube reticulate-veined ; 

 lobes callose. 3. A. erecta. 



1. A. purpurea (L.) Pennell. Stem terete below, 3-9 dm. tall, wide-branched: 

 axillary fascicles shorter than the leaves: leaf -blades linear, often narrowly 

 so, scabrous on the upper surface, those of the stem 2-4 cm. long: pedicels 2-5 

 mm. long, in fruit slightly longer: calyx-lobes triangular-lanceolate: corolla 

 rose-purple: anther- sacs mucronate at base: capsules 4-6 mm. long. [Gerardia 

 purpurea L.] Coastal sand-dunes and hammocks, U. S. keys. [E. K.] 



2. A. fasciculata (Ell.) Raf. Stem terete below, 4-9 dm. tall, much-branched: 

 axillary fascicles equalling the leaves: leaf -blades linear, often narrowly so, 

 scabrous on the upper surface, those of the stem 1.5-3.5 cm. long: pedicels 2-5 

 mm. long, in fruit slightly longer: calyx-lobes triangular-lanceolate: corolla 

 rose-purple: anther-sacs mucronate at base: capsules 4-6 mm. long. [Gerardia 

 fasciculata Ell.] Hammocks and hollows among the sand-dunes, Big Pine 

 Key. [E. K.] 



3. A, erecta (Walt.) Pennell. Stem angled, smooth, 4-6 dm. tall, stiff- 

 branched: leaf-blades remote, linear, widening upward, obtusish or obtuse, 

 scabrous on the upper surface, those of the stem 1-1.5 cm. long: pedicels 5-10 

 mm. long, in fruit reaching 15 mm., longer than the bracts : calyx-lobes minute : 

 capsules 3-4 mm. long. [Anonymos erecta Walt. Gerardia parvifolia (Hook.) 

 Chapm.] Pinelands, Big Pine Key. 



Agalinis Plukenetii (Ell.) Raf., distinguished by its much-branched habit; 

 filiform-setaceous leaves; pedicels 5-10 mm. long and seemingly terminal 

 .flowers 25-30 mm. long, appears to have been collected many years ago on 

 [Big] Pine Key. As this locality is considerably out of the known range of 

 the species, and an error of labeling is possible, the record should be verified. 



5. BUCHNEEA L. Erect herbs. Leaf-blades usually toothed. Flowers 

 spicate. Calyx-lobes 5, broad, much shorter than the tube. Corolla blue or 

 white, salverform: limb oblique. Style short. Capsule ovoid. 



1. B. elongata Sw. Stems 2-6 dm. tall, scabrous or hispidulous: blades of the 

 stem-leaves oblong to linear, 1.5-8 cm. long, entire or sparingly toothed: 

 calyx-lobes acute, the upper ones deltoid: corolla slightly hairy. Pinelands 

 and sand-dunes, U. S. keys, L. keys. [E. K.] (Bah., Cuba, Ant.) BLUE- 

 HEARTS. 



FAMILY 11. ACANTHACEAE. ACAKTHUS FAMILY. 



Herbs or shrubs. Leaves alternate, opposite, or whorled: blades 

 simple. Flowers perfect, irregular. Calyx of usually 5 partially united 

 sepals. Corolla of 5 partially united petals, 2-lipped or sometimes essen- 

 tially regular. Androecium of 4 didynamous or of 2 equal stamens, one 

 pair being abortive or obsolete. Gynoecium of 2 united carpels. Ovary 

 2-celled. Ovules commonly 2 in each cavity. Fruit a capsule, often -with 

 a stipe-like base, the valves opening elastically. 



Corolla obscurely 2-lipped ; lobes spreading : stamens 4. 



Calyx-lobes bristle-like : anther-sacs pointed at the base : capsule 2-4-seeded. 



1. DISCHOBISTE. 



