562 Oedeb 90.— BOEKAGINACE^. 



10. MERTENSIA, Roth. (Pulmonaiia, Tourn.) Smooth Lung- 

 wort. (Named for Prof. F. G. Mertens, of Bremen, Germany.) Calyx 

 short, 5-cleft; cor. tube cylindric, twice longer than the calyx, limb 

 subcampanulate, 5-cleft, throat naked, or oftener with 5 folds or ridges 

 between the insertion of the stamens ; sta. inserted at top of the tube ; 

 anth. subsagittate ; ach. sm.ooth or reticulated. — 2C St. and leaves usu- 

 ally glabrous and pellucid-punctate, the radical many-veined, cauline 

 sessile. Rac. terminal. 



1 M. Virginica DC. Erect or ascending, very smooth ; radical Ivs. large, petio- 

 late, oval, ovate or obovate, eauline sessile, lanoe-ovate or oblong, all entire, ob- 

 tuse ; cor. tube 3 times longer than the calyx, twice longer than the limb. — Dry, 

 rich soils, N. Y. to S. Car. and Iowa. A plant of rare beauty, 12 to 18' high. 

 Lvs. 2 to 6' long, the cauline feather-veined. Fls. numerous, nodding, somewhat 

 trumpet-shaped, 10" long, varying through every shade of blue and lUac even on 

 the same plant. May. (Lithospermum pulchrum Lehm.) 



2 M. maritima Don. Glabrous, procumbent or ascending; lvs. ovate, obtuse, 

 fleshy, glaucous, the radical petiolate, cauline sessile ; rao. leafy ; caj. deeply cleft, 

 scarcely half as long as the glabrous, 5-oleft corolla. — Sea shore, N. Eng., rare, 

 Can. and- northward. St. diffusely branched. Fls. purplish blue, limb longer 

 than the tube, which exhibits 5 folds at its summit. Jl. 



3 M. panioulata Don. .Scabrous with minute hairs, erect; radical lvs. petio- 

 late, ovate, cordate, cauline ovate-oblong, sessile, all acuminate and veined ; cat 

 hispid, thrice shorter than the subcampanulate corolla. — Shores of the great 

 Lakes, from Superior to Bear L., also in gardens. An elegant plant, with fls. . 

 varying from bright blue to white, paniculate, nodding. 



11. MYOSOTIS, Dill. Foeget-me-not. (Gr. jivg, a mouse, and 

 (oSf) coTog, an ear ; from the form of the leaves.) Calyx 5-cleft ; cor- 

 olla salver-form or funnel-form, tube about equaling the calyx, the 5 

 lobes convolute in bud, orifice closed with short, concave scales ; ache- 

 nia ovate, smooth, with a small cavity at base. — Herbs, slightly villous. 

 Rac. at length elongated, bractless, or with a few, small lvs. at the base. 

 Fls. never axillary. 



§ liftcemes one-sided. Calyx clothed ■with minute, apprcssed hairs, if any No. 1 



§ liacemes two-sided. Calyx beset with spreading, minntely-hooliod bristles Nos. 2, 3 



I'm. paliistris Both. /?. laxa (Fig. 220). Minutely strigous or smoothish, 

 somewhat branched, erect; lvs. linear-oblong, obtuse, with short, scattered hairs; 

 rac. without bracts ; pedicels divaricate in fruit, twice as long as the short, spread- 

 ing, smoothish, equal calyx. — "21- Ditches aud marshes. Can. and TJ. S., very slen- 

 der, about a foot higlj. Lvs. scattered, sessile, about 1' hf 2 or 3"- Eac. termi- 

 nal, or often one of them supra-axillary, one-sided. Fls. 2 to 3" broad, blue, with 

 a yellow center. Fed. 3 to 6" long. May — Aug. (M. caaspitosa Sehultz.) 



2 M. arvensis L. Hirsute with tubercular hairs, branching ; lvs. oblong-langeo- 

 late, acute ; pedicels spreading in fruit, iwice as long as the open, equal calyx, in 

 loose racemes, which are 7wt at all leafy among the flowers at tlieir base.—® 

 Fields, &c, Sts. C to 15' high. Lvs. 1' and less in length. Fls. 2 to 3" broad, 

 white? JL, Aug. We describe from English specimens, having seen none 

 native. (M. intermedia. Link.) 



3 M. striata Link. Eoughly hirsute with spreading, mostly tubercled hairs; 

 Iva. oblong, or the lower spatulate-oblong, obtuse or acute, pedicels ascending, as 

 long as the closed, uncinate-bristly, unequal calyx, in racemes which are Uafy at 

 Jose.—® Dry fields and hills, Conn., N. Y., to Wis., La. and Ala. Plant varying 

 greatly in aspect at different stages of growth, yet always recognized by its c^yi, 

 which is decidedly bilabiate, the lower lip of 2 longer teeth. Plant 6 to 16' high, 

 grayish. Lvs. 1' long, or in larger specimens 2'. Fls. very small (1" broad), 

 white. May — Jl. (M. verna Nutt. M. arvensis Torr.) 



