SCROPHULARIACEJE. (PIGWOBT FAMILY.) 289 



ing on the wet muddy banks of rivers, with crowded opposite round leaves, and 

 minute solitary flowers sessile in their axils. (Name from jjyxt, half, *nd av6os t 

 flower, in reference to the unequally divided corolla.) 



1. IB. micranttiemoides, Nutt. Low banks of the Delaware below 

 Philadelphia. (Perhaps only Micranthemum.) 



14. L.OIOSEL.L.A, L. MUDWOBT. 



Calyx bell-shaped, 5-toothed. Corolla short, widely bell-shaped, 5-cleft, 

 nearly regular. Stamens 4 : anthers confidently 1-celled. Style short, club- 

 shaped. Pod globular, many-seeded ; tho partition thin and vanishing. Small 

 annuals, growing in mud, usually near the sea-shore, creeping by slender run- 

 ners, without ascending stems ; the entire fleshy leaves in dense clusters around 

 the simple 1-flowered peduncles. Flowers small, white or purplish. (Name a 

 diminutive of limus, mud, in which these little plants delight to grow.) 



1. Li. aqudtica, L. : var. teimifolia, HofFm. Leaves (with no 

 blade distinct from the petiole) awl-shaped or thread-form. (L. tenuifolia, Nutt. 

 L. subulata, Ives.) In brackish mud, from New Jersey northward. Aug. 

 Plant 1'- 2' high. (Eu.) 



15. S\ JVTIIYRIS, Benth. SYNTHTRIS. 



Calyx 4-parted. Corolla somewhat bell-shaped, variously 2 -4-lobed or cleft. 

 Stamens 2, inserted just below the sinuses on each side of the upper lobe of the 

 corolla, occasionally with another pair from the other sinuses, exserted : anther- 

 cells not confluent into one. Style slender: stigma simple. Pod flattened, 

 rounded, obtuse or notched, 2-grooved, 2-celled (rarely 3-lobed and 3-celled), 

 many-seeded, loculicidal; the valves cohering below with the columella. 

 Perennial herbs, with the simple scape-like stems beset with partly-clasping bract- 

 like alternate leaves, the root-leaves rounded and petioled, crenate. Flowers in 

 a raceme or spike, with bracted pedicels. (Name composed of ovv, together, and 

 Ovpis, a little door; evidently in allusion to the closed valves of the pod.) 



1. S. HoughtOiiiaiia, Benth. Hairy ; v root-leaves round-ovate, heart- 

 shaped ; raceme spiked, dense (5'- 12') ; corolla not longer than the calyx, usu- 

 ally 2-3-parted. High prairies and hills, Wisconsin, Houghton, Lapham. 

 Michigan, Wright. Illinois, Mead. May. Corolla greenish-white, for the 

 most part deeply 2-parted, with the upper lip entire, a little longer and narrower 

 than the lower, which is 3-toothed ; often 3-parted, with the upper lip notched 

 or 2-lobed. When there are 4 stamens the lower are later than the others. 



16. VERONICA, L. SPEEDWELL. 



Calyx 4-parted. Corolla wheel-shaped or salver-shaped, the border 4-parted 

 (rarely 5-parted) ; the lateral lobes or the lower one commonly narrower than 

 the others. Stamens 2, one each side of the upper lobe of the corolla, exserted: 

 anther-cells confluent at the apex. Style entire : stigma single. Pod flattened, 

 usually obtuse or notched at the apex, 2-celled, few -many-seeded. Chiefly 

 25 



