ORDER 88. SCROPHULARIACE^. 227 



Obscurely crenate, obtuse ; ped. shorter than the calyx, cor. $ longer, the upper lip 

 emarginate ; disk 10-toothed. Swamps, N. J., and S. 6 12 7 . August. 

 4 H. rottmdifolia Ph. Creeping, smooth ; Ivs. round-obovate. entire ; ped. 2 or 3 

 times longer than cal. ; cor. upper lip notched. Pools, 111. to La. If. Fls. 5". Aug. 



24. GRATIOIiA. HEDGE HYSSOP. Calyx 5-parted, subequal. Cor. 

 upper lip entire or slightly bifid, lower trifid, the palate not prominent. 

 Sta. 2, fertile, mostly with 3 sterile filaments. Capsules 2-celled, 4-valved, 

 valves inflexed at margin. U Low, with opposite leaves. Peduncles ax- 

 illary, 1-flowered, usually bibracteolate near the calyx. 



Flowers sessile. Cells of anthers vertical. Plants rigid, bristly-hairy No?. 7, 8 



Flowers pedunculate. Anther cells transverse. Plants smooth or viscid., .(a) 



a Sterile filaments none, or very minute and pointed Nos. 1 3 



a Sterile filaments thread-like, tipped with a small head Nos. 46 



1 G. Vlrginiaiia L. St. ascending, branched ; leaves lanceolate, sparingly toothed ; 



ped. as long or longer than the Ivs. ; cor. twice longer than the cal. ; sterile fil. none. 

 U Common. 48'. St. terete, branching, with white or pale-yellow flowers. July. 



2 G. Floridaiia Nutt, St. erect, branched ; Ivs. lanceolate, few-toothed ; ped. longer 



than the leaves ; cor. 4 times longer than the calyx (7"), yellow, (g) Fields, S. 6 9'. 



3 G. spliserocarpa Ell. Ascending, branched ; leaves lance-ovate, attenuate to the 



base, sparingly toothed ; ped. scarcely longer than the cal. Damp. 3 1'. W. andS. 



4 G. aiirea Muhl. Smooth ; Ivs. oblong-lanceolate, subeutire, clasping; ped. as long 



as or longer than the leaves ; cor. golden yellow. Muddy soils. 68'. August. 



5 G. viscosa Schw. Viscid-downy ; leaves lance-ovate, sharp-serrate, clasping ; ped. 



longer than the leaves ; corolla white, twice longer than calyx, which is 2 or 3 times 

 longer than the capsule. Wet places, Ky. to N. Car., and S. 912'. (G. Drnmmonclii.) 



6 G. raniosa Walt. St. terete, creeping at base ; leaves linear, acute, with few teeth 



near the apex ; bractlets nearly : sep. linear ; cor. white. Muddy shores, S. May-Jl. 



7 G. pilosa MX. Erect, hispid ; vs. ovate, few-toothed, clasping, rugous ; cor. tube 



scarcely longer than the calyx, white. Wet, Md., and S. 912'. July September. 



8 G. subul&ta Baldw. Erect, hispid ; Ivs. linear or lance-linear, margins revolute, 



entire ; cor. tube slender, thrice longer than the calyx. Wet sands, Ga., Fla. Sept. 



25. ILYSANTHES, Raf. Cal. 5-parted. Cor. upper lip short, erect, 

 bifid, lower lip larger, spreading, trifid. Sta. 2, fertile ; 2 sterile fil. forked, 

 one of the divisions tipped with an obtuse gland, the other acute, or rarely 

 with half an anther. Caps, ovate or oblong, about equalling the calyx. 

 (T) With opp. Ivs. and axillary, 1-flwcl. ped., resembling Gratiola in habit. 



1 I. gratioloides Benth. Branching, ascending 38' ; Ivs. oblong, obtuse, subsee- 



sile, obscurely dentate ; cor. twice longer than the calyx, bluish-white, 4". A small 

 weed-like herb, in wet places : common. Peduncles 3 6". July, August. 



2 I. graiidiflora Benth. Diffusely creeping ; Ivs. thick, roundish, entire, subclasp- 



ing ; ped. hirsute, 1', corolla 6" long, violet-blue. Sandy swamps, Ga. (Nuttall.) 



3 I. refracta Benth. Erect, slender ; Ivs. clustered below, obovate to oblong, entire 



the cauline remote, bract-like, linear-subulate ; ped. filiform, refracted in fruit ; cor. 

 light-blue, 4 times longer than the calyx (5"). Damp pine woods, S. 610'. June. 



4 I. saxicola (Curtis). Stems leafy, clustered ; leaves oblong, obtuse, entire, sessile ; 



ped. 34 times longer than the leaves (7 9"), refracted in fr. ; cor. blue, 4". S. Aug. 



26. MICRANTHEMUM, Rich. Cal. 4-toothed or cleft. Cor. upper 

 lip shorter, entire, lower trifid. Sta. 2, fertile, a glandular scale at the base 

 of each, sterile filament none. Style short, apex clavate or spatulate. Caps. 

 2-valved. x? Slender, glabrous, with opposite Ivs. and minute fls. 



