SCROPHULA.RIACEJE. (FIGWORT 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 rj^i, half, and avdas, 

 flower, in reference to the unequally divided ccrolla.) 



1. H. niicranthemoides, Nutt. — Low banks of the Delaware below 

 Philadelphia. (Perhaps only Micranthemuin.) 



14. LIMOSELLA, L. Mudwort. 



Calyx bell-shaped, 5-toothcd. Corolla short, widely bell-shaped, 5-clcft, 

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

 shaped. Pod globular, many-seeded ; the 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 l-flowered peduncles. Flowers small, white or purplish. (Name a 

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



1. L.. aqMatica, L. : var. tenuifolia, Hoffm. Leaves (with no 

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

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

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



15. SYNTHYBIS, Benth. Stnthyris. 



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-eclled), 

 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 petiolcd, crcnate. Flowers in 

 a raceme or spike, with bractcd pedicels. (Name composed of <rvv, together, and 

 6vpis, a little door; evidently in allusion to the closed valves of the pod.) 



1. S. HougiltOlliaiia, Benth. Hairy; 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-partcd 

 (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 



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