BORAGINACEAE. 77 1 



Leaves spatulate, or oblanceolate, obtuse, the lower and basal ones 2-4 cm. long; 

 calyx densely setose with yellowish hairs, corolla about 4 nun. broad; style fili- 

 form; nutlets acutely margined, tuberculate on the back. In dry soil, western 

 Neb. (according to Webber;; Wyo. to Nev. and N. Mex. May-Aug. 



7. PNEUMARIA Hill. 



A perennial fleshy glabrous glaucous herb, with alternate entire leaves, and 

 small blue pinkish or white flowers in loose terminal leafy -bracted racemes. Calyx- 

 lobes triangular-ovate or lanceolate, somewhat enlarging in fruit. Corolla tubular- 

 campanulate, crested in the throat, 5-lobed, the lobes imbricated in the bud. 

 slightly spreading. Ovary 4-divided; style slender. Nutlets erect, fleshy, at- 

 tached just above their bases to the somewhat elevated receptacle, smooth, shining, 

 acutish-margiiied, becoming utricle-like when mature. A monotypic genus. 



1. Pneumaria maritima (L.) Hill. Sea Lungwort. Sea Bugloss. Oys- 

 ter Plant. (I. F. f. 3033.) Pale green, the branches spreading or ascending, 

 0.7-4 dm. long. Leaves thick, ovate, obovate, or oblong, 2-10 cm. long, the lower 

 and basal ones contracted into margined petioles; flowers blue or nearly white, 

 about 6 mm. long, pedicelled; pedicels slender, 1-3.5 cm - l° n g; calyx shorter than 

 the corolla-tube; nutlets about as long as the calyx- lobes when mature. On sea- 

 beaches, L. I. (?); Mass. to Newf. and Greenland; Ore. to Alaska. Also on the 

 coasts of Europe and Asia. May-Sept. 



8. MERTENSIA Roth. 



Perennial herbs, with alternate leaves, and rather large clustered blue purple or 

 white flowers. Calyx- lobes lanceolate or linear, little enlarged in fruit. Corolla 

 tubular-funnelform or trumpet-shaped, its lobes obtuse, imbricated, little spreading. 

 Stamens inserted on the tube of the corolla, included, or scarcely exserted; anthers 

 obtuse. Ovary 4-divided; style filiform. Nutlets erect, coriaceous, wrinkled when 

 mature, attached above their bases to the convex or nearly flat receptacle. [In 

 honor of Prof. C. F. Mertens, a German botanist.] About 16 species, of the north- 

 ern hemisphere. Besides the following some 9 others occur in western N. Am. 



Corolla trumpet-shaped, not crested in the throat, the limb barely 5-lobed. 



1. M. Virginica. 

 Corolla funnelform-campanulate, crested in the throat, the limb manifestly 5-lobed. 



Stem-leaves ovate or ovate-lanceolate, acuminate. 2. M. paniculata. 



Stem-leaves oblong or lanceolate, obtuse or acute. 3. M. lanceolata. 



1. Mertensia Virginica (L.) DC. Virginia Cowslip. (I. F. f. 3034.) 



Glabrous; stem 3-6 dm. high. Leaves oblong, oval, or obovate, obtuse, 5-13 cm. 

 long, the lower narrowed into margined petioles; racemes short, corymb-like; 

 lowers blue-purple, showy, about 2.5 cm. long; calyx-lobes oblong-lanceolate, 

 obtusish; corolla-tube cylindric, a little expanded above, longer than the 5-lobed 

 plaited limb, pubescent at the base within; disk with two opposite linear lobes; fila- 

 ments filiform, much longer than the anthers. In low meadows and along streams, 

 Ont. to N. J., S. Car., Minn., Neb. and Kans. March-May. 



2. Mertensia paniculata (Ait.) G. Don. Tall Lungwort. (I. F. f. 3035.) 

 Roughish-pubescent, dark green; stem 4-9 dm. high. Leaves thin, pinnately 

 veined, those of the stem 5-13 cm. long, the lower narrowed into slender petioles; 

 basal leaves ovate, rounded or cordate at the base; pedicels filiform, 8-20 inm. long; 



purple-blue, 12-14 mm. long; calyx-lobes lanceolate, acute; corolla-tube 

 about twice as long as the calyx and exceeding the 5-lobed limb; filaments flattened, 

 slightly longer than the anthers; style filiform, usually somewhat exserted. In 

 woods' or thickets, Hudson Bay to Alaska, Mich.. Neb., Colo, and Utah. July- 

 Aug. 



3. Mertensia lanceolata (Pursh) DC. Lance-Leaved Lungwort, i I. F. f. 

 3036.) Stem slender, 1.5-4.5 dm. high. Leaves papillose, indistinctly veined, 

 light green, the upper lanceolate, acute, sessile or slightly clasping at the base, 

 the lower oblong or oblanceolate, obtuse, 7-10 cm. long, narrowed into margined 

 petioles; flower- blue. 10-12 mm. long; pedicels6 14 mm. long; calyx-lobes lance- 

 olate, the tube longer than the calyx and longer than the 5-lobed limb, hairy at the 



