ORDER XC. SCROPHTJLARIACE.E. 457 



Genus VIII.— GRATIO'LA. L. 2—1. 

 (From gratia, favor, from its supposed medicinal qualities.) 



Calyx 5-leaved or 5-parted, often with 2 bracts at the base. 

 Corolla irregular, resupinate. Stamens 2 — 4 ; when 4, two of 

 them sterile. Capsule 2-celled. 



a. Two bracts at the base of the calyx. 



1. G. Florid a'na, (Xutt.) Stem glabrous, erect, somewhat branch- 

 ing. Leaves lanceolate, or the lowermost obovate, slightly serrate, nar- 

 row at the base. Corolla with the upper lip emarginate, tube long. 

 Stamens 2. — If. 



i. Gr. Yirgixia'xa, (L.) Stan succulent, somewhat furrowed, not 

 quite terete, erect, or declined. Leaves sessile, obscurely 3-nerved. 

 Flowers axillary, on short peduncles ; lobes of the calyx nearly equal, 

 with the bracts about equal to the segments. Corolla curved. Sta- 

 mens 2, short. Capsule ovate, 2-celled, 2-valved. Seeds numerous. — 

 "White, tinged with red. If. March — April. Wet places. 8 — 8 inches. 



3. G. SPn^aocAR'PA, (Ell.) Stem procumbent, jointed, terete, furrowed. 

 Leaves sessile, obovate, serrate, obscurely 3-nerved. Flowers solitary, 

 axillary. Sepals equal. Bracts large, expanding. Stamens 2. Style 

 short. Capsule globose. Seeds numerous. — If. Sept. — Oct. In ponds. 



4. G. au'rea, (Muhl.) Stem procumbent, glabrous, terete, slightly 

 furrowed, jointed. Leaves ovate-lanceolate, somewhat amplexicaul, ob- 

 scurely 3-nerved, acutely serrate, dotted. Flowers axillary, solitary, on 

 short peduncles. Bracts as long as the segments of the calyx. — Yellow. 

 If. April — June. "Wet pine-barrens. 1 — 2 feet. 



5. G. visco'sa, (Schw.) Viscidly pubescent, decumbent. Leaves 

 ovate-lanceolate, acute, dentate, 3-nerved, amplexicaul. Segments of 

 the calyx broad-lanceolate ; bracts short. — White, yellow within. 



6. G. Drummoxd'ii, (Benth.) Viscid, puberulent, decumbent. Leaves 

 lanceolate, acute, few serratures, 3-nerved, amplexicaul. Bracts short ; 

 segments of the calyx subulate. — Blue or white. 



6. Calyx without bracts. 



I. G. quadridexta'ta, (Mich.) Stem procumbent, terete, pubescent, 

 slightly furrowed. Leaves opposite, subulate, with 2 teeth near the 

 summit. Flowers solitary, axillary. Sepals unequal. Anthers white, 

 — White, tinged with yellow and purple. If. Around ponds. 



8. G. pilo'sa, (Mich.) Stem erect, terete at the base, square at the 

 summit, hair}-. Leaves oval, amplexicaul, serrate, rugose. Flowers ax- 

 illary, solitary. Sepals unequal. Capsule smooth. — White, tinged 

 witli purple. 2f. In wet places. Common. July — Sept. 



9. G. subula'ta. (Bald.) Stem erect, hispid. Leaves linear-lanceo- 

 late, margins revolute, entire. Flowers subsessile. Segments of the 

 calyx subulate ; tube of the corolla long, slender. — 6 — 8 inches. 



10. G. tetrago'xa, (Ell.) Stem procumbent, square, jointed, glabrous. 

 Leave* sessile, lanceolate, slightly toothed, obscurely 3-nerved. Flowers 

 solitary, axillary, on square peduncles. Sepals linear, equal. Capsules 

 oblong.— White, streaked. 2f . In water. Sept.— Xov. 



llysanthes yratioloides, Benth. 



II. G. Megalocarpa, (Ell.) Leaves lanceolate, serrate, pubescent. 

 Flowers opposite, on peduncles longer than the leaves. Sepals linear. 

 Capsule large, globose.— Yellow. If. July— Aug. Wet places. 



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