SCROPHULARIACEAE. 



[Vol. III. 



2. Ilysanthes attenuata (Muhl.) Small. 



Short-stalked False Pimpernel. 



(Fig. 3281.) 



Lindernia attenuata Muhl. Cat. 59. 1813. 

 Ilysanthes gratioloides curtipedicellata Bush, Bull. 



Torr. Club, 21 : 494. 1894. 

 /. attenuata Small, Bull. Torr. Club, 23: 297. 1896. 



Stem erect or ascending, 3 / -i6 / long, the 

 branches spreading. Leaves oblong to ovate, or 

 sometimes obovate, % f -\% f long, thinnish, ob- 

 tuse, serrate with a few low teeth, 3-5 -nerved, nar- 

 rowed into short petioles, or sessile; peduncles 

 shorter than the leaves; calyx-segments linear- 

 subulate, as long as the capsule, or longer; cor- 

 olla 2 // -6 // long; capsule narrowly ovoid, about 

 1" long, pointed; seeds slightly curved, l}i /, -2 // 

 long, yellowish brown, the ends usually rounded. 



In wet places, Maine and Ontario to Wisconsin, 

 south to Florida and Missouri. Ascends to 2000 ft. 

 in Virginia. May-Oct. 



16. MICRANTHEMUM Miclix. Fl. Bor. Am. 1: 10. pi. 12. 1803. 



Creeping or ascending, branched small leafy annual glabrous herbs, with opposite obo- 

 vate oval or orbicular sessile entire leaves, and minute white or purplish short-ped uncled 

 flowers, solitary in the axils. Calyx 4-5-lobed or 4-5-parted. Corolla very irregular, the 

 tube short, the upper lip shorter than the lower, or wanting, the lower 3-lobed, spreading or 

 ascending, the middle lobe the largest. Stamens 2, anterior; filaments short, somewhat 

 dilated or appendaged at the base; anthers small, their sacs distinct, parallel, or slightly 

 divergent. St) le short; stigma 2-lobed. Capsule globose, 2-celled by a membranous parti- 

 tion or becoming i-celled. Seeds.numerous, minute. [Greek, small flower.] 



About 16 species, natives of America. Besides the following, another occurs in the southern 

 United States. 



i. Micranthemum micranthemoides (Nutt.) Wettst. Nuttall's Micran- 



themum. (Fig. 3282.) 



Hemianthusmicranthemoides'NuX.t. Journ. Acad. Phil. 



1: 119. pi. 6. 1817. 

 Micranthemum Nuttallii A.Gray,Man. Fd. 5, 331. 1S67. 

 Micranthemum micranthemoides Wettst. in Fngl. & 



Prantl, Nat. Pfl. Fam. 4: Abt. 3b. 77. 1891. 



Somewhat fleshy; stem filiform, creeping, the 

 branches ascending, y^'-ity high. Leaves obo- 

 vate to oval, obtuse, \"-2 x / 2 ff long; flowers about 

 yi" long, borne on peduncles of about the same 

 length; calyx campauulate in flower, obovoid in 

 fruit, 4-lobed, usually split along one side; pedun- 

 cles recurved in fruit; upper lip of the corolla 

 nearly obsolete; middle lobes of the lower lip 

 longer than the lateral ones; appendages at the 

 bases of the stamens nearly as long as the fila- 

 ments; stigma of 2 subulate lobes; capsule obo- 

 void-globose, x / 2 f ' in diameter, as long as the calyx. 



In tidal mud, New Jersey to Florida. Also in Cuba. 

 Aug.-Oct. 



17. LIMOSELLA I,. Sp. PI. 631. 1753. 



Low glabrous succulent floating or creeping, tufted annual herbs(or perennial by stolons?), 

 with filiform stems rooting at their nodes, basal slender-petioled entire leaves, and filiform 

 i-flowered scape-like peduncles, the flowers small, white, pink, or purple. Calyx campauu- 

 late, 5-lobed. Corolla nearly regular, open-campanulate, the tube short, the limb 5-cleft. 

 Stamens 4, inserted on the corolla-tube, scarcely exserted; filaments short; anther-sacs con- 

 fluent. Style short; stigma capitate. Ovary 2-celled at the base, i-celled above. Capsule 

 globose or oblong, becoming i-celled, many-seeded. [Greek, mud seated.] 



About 6 species, of wide geographic distribution. 

 Leaves expanded above into an oblong or linear-oblong blade. i. L. aqualica. 



Leaves filiform-linear, with little or no distinction between blade and petiole. 2. L. tcnuifolia. 



