Vol. in.] 



FIGWORT FAMILY. 



163 



5. Gratiola pilosa Michx. Hairy 

 Hedge- Hyssop. (Fig. 3279.) 



Gratiola pilosa Michx. Fl. Bor. Am. 1: 7. 1803. 



Perennial (?), hirsute; steins slender, erect, 

 strict, simple, or branched, 6 / -2 high. Leaves 

 ovate or ovate-lanceolate, dentate or denticulate, 

 sessile, acute or obtusish at the apex, rounded, 

 truncate or subcordate at the base, % / -i / long; 

 flowers nearly or quite sessile, commonly nu- 

 merous, about \" long; corolla purplish or 

 white, slightly longer than the calyx and bract- 

 lets; sterile filaments 2, capitate at the summit; 

 anther-sacs of the fertile stamens parallel, con- 

 tiguous; capsule oblong-conic, acuminate, about 

 the length of the calyx, or shorter. 



In dry soil, southern New Jersey to Arkansas and 

 Texas. May-Aug. 



15. ILYSANTHES Raf. Ann. Nat. i 



1820. 



Annual or biennial glabrous slender branching herbs, with opposite, mostly dentate and 

 sessile leaves, and small purplish peduncled flowers solitary in the axils. Peduncles not 

 bracteolate. Calyx 5-parted, the segments linear. Corolla irregular, the tube somewhat ex- 

 panded above, the limb 2-lipped; upper lip 2-cleft, erect; lower lip larger, 3-lobed, spread- 

 ing. Fertile stamens 2, included, their anther-sacs divergent; sterile stamens 2, 2-lobed, 

 one of the lobes capitate, glandular, the other glabrous, shorter. Style slender; stigma 

 slightly 2-lobed. Capsule oblong or ovoid, septicidally dehiscent. Seeds numerous, 

 wrinkled. [Greek, mud-flower.] 



About 10 species, of wide geographic distribution. Besides the following, 2 or 3 others occur 

 in the southeastern United States. 



Peduncles longer than the leaves; calyx-segments shorter than the capsule. 1. I. gratioloides. 



Peduncles shorter than the leaves; calyx-segments mostly as long as the capsule, or longer. 



2. /. allenuata. 



i. Ilysanthes gratioloides (%.) Benth. Long-stalked False Pimpernel. 



(Fig. 3280.) 



CaprariagralioloidesL,.Sp. PI. Ed. 2, 876. 1763. 



Ilysantlies riparia Raf. Ann. Nat. 13. 1820. 



Ilysanthes gratioloides Benth. in DC. Prodr. 10: 

 419. 1846. 



Stem slender, mostly erect, at length dif- 

 fusely branched, 3 / -8 / long. Leaves ovate, 

 ovate-oblong, or the lower obovate, sessile, 

 or slightly clasping at the base, remotely 

 denticulate or entire, obtuse or acutish at 

 the apex, thickish, 3-7-nerved, y z '-\ f long, 

 the upper ones commonly much smaller; 

 peduncles slender, considerably exceeding 

 the leaves; flowers 3 // -5 // long; calyx-seg- 

 ments linear, about one-half the length of 

 the corolla, shorter than the capsule; cap- 

 sule narrowly ovoid-oblong, bluntish.2^-3" 

 high; seeds \ f/ long, reddish, the ends usu- 

 ally truncate. 



In wet places, New England to Florida, west 

 to Ontario, Minnesota and Texas. Also on the 

 Pacific Coast. Said to occur in northeastern 

 Asia, in South America, and to be naturalized 

 in Europe. Lower leaves sometimes short-peti- 

 oled. July-Sept. 



