ORDER 86. SCROPHULARIACE^E. 525 



1 I. gratioloides Benth. Glabrous, ascending, much branched; Ivs. ovate or 

 oblong, obtusish, subdentate, lower attenuated to a petiole; cor. erect, twice 

 longer than the calyx, on bractless peduncles; sterile fil. bearing the glabrous. 

 acute lobe below the middle. X> Can. and U. S. in wet places. A low, incon- 

 spicuous plant, 3 6 or 8' high. Leaves 58" long, sometimes mostly sessile, 

 commonly the lower distinctly petiolate. Corolla bluish-white, much exserted, 5" 

 long. Jl., Aug. (L. dilatata and attenuata Muhl.) 



2 I. refracta Benth. Slender, smooth, erect; mostly subradical, oval-oblong and 

 spatulate, caulino few, small and remote, lance-linear ; ped. filiform, subterminal, 

 few, deflected of ter flowering ; cor. tube 4 times longer than the linear sepals. U 

 Damp pine- woods, N. Car. to Ga. (Mettauer, near Macon). St. G to 10' high, 

 sparingly branched. Lower Ivs. 7 to 9" long, caulino 1 to 5". Fls. 5" long, 

 light blue. Jn. 



3 I. grandiflora Benth. Smooth, creeping, diffuse; Ivs. thick, orbicular, entire, 

 subclasping, veinless ; ped. very hairy ; sterile fil. 2 ; partly exserted, lobe-bear- 

 ing in the middle, thickened at the end. if Ga. (between Savannah and Au- 

 gusta, Nutt.) in sandy swamps. Lvs. 3 to 4" diam. Pod. 1' long, cor. G", violet 

 blue. 



19. MICRANTHEMUM, Rich. (Gr. fiucpo^ small, dvOog, flower ; such 

 is its character.) Calyx 4-toothcd or cleft ; corolla upper lip shorter, 

 entire, lower trifid ; stamens 2 fertile, a glandular scale at the base of 

 each, sterile filament none ; style short, apex clavate or spatulate, en- 

 tire ; capsule 2-valved. @ Slender, glabrous, creeping, Avith opposite 

 Ivs. and minute flowers. 



Calyx deeply cleft, segments lonzer than the unequal corolla lips ...................... No. 1 



Calyx merely toothed', set:uieufcfsliorter than the very unequal corolla lips ............ No. 2 



1 M orbiculatum MX. Lvs. orbicular or roundish-obovate, obscurely 3-veined, 

 entire, contracted to a very short petiole; fls. solitary, axillary, much shorter than 

 the leaves and on pedicels shorter than the calyx. N. Car. to Fla. and La., com- 

 mon, in mud or shallow water. Sts. diffuse, fiiform. Lvs. often crowded, 2 to 4'' 

 long, 2 to 3" wide. Fls. globular, less than 1" long, white. All summer. (M. 

 cmarginatum Ell.) 



2 M. micrantha. Lvs. roundish, ovate, crowded, sessik, obscurely 3-veined; fls. 

 sessile, axillary, very minute. Inundated banks of rivers, Delaware to the Ogee- 

 chee, probably not common. Plant a few inches long, branched. Fls. white, the 

 middle segm. of the lower lip largest and spreading. Sept., Oct. (Herpestis 

 micrantha Ell. Ilemianlhus micranthemoides Nutt.) 



20. AMPHIANTHUS, Torn (Gr. d^w, both or twain, avOo$ ; allu- 

 ding to its two-fold inflorescence.) Calyx 5-parted ; corolla small, fun- 

 $el form, limb 4-lobed, lower lobe larger, stamens 2, included ; anthers 

 2-celled ; style lightly bifid, lobes acute ; capsule obcordatc, compressed, 

 valves septiferous in the middle ; seeds numerous. Acaulescent, 

 minute, with fls. both sessile and ou scapes. 



A. pusillus Torr. On wet rocks, Newton Co., Ga. (Leavenworth). A minute 

 herb, with the Ivs. nearly radical, linear, obtuse, entire, 1 to 2" long. Fls. white, 

 hardly 1" long, some sessile among the leaves, others on simple, filiform pedun- 

 cles 1' long. Mar., Apr. 



21. LIMOSEL'LA, L. MUDWORT. (Lat. limus, mud ; its locality.) 

 Calyx 5-cleft ; corolla shortly campanulate, 5-clef% equal ; stamens ap- 

 proximating in pairs; capsule partly 2-celled, 2 -valved, many-seeded.- 

 Minute aquatic herbs. Scape 1-flowered. 



L. tenuifolia Nutt. Acaulescent; Ivs. linear, scarcely distinct from tho petiole; 

 scape as long as the leaves ; cor. segments oval-oblong, shorter than the calyx. 

 CD R- L, Mass., N. Y., Penn. A minute plant, an inch in height, growing on 

 the muddy banks of rivers. Leaves and flower-stalks radical Flowers very 

 small, blue and white. Aug. 



