corolla whitish, about 2 mm. wide; mericarps of the globose fruit equally short- 

 glochidiate over the whole back, 3-4 mm. long. 



In rich woods, swampy areas and along wooded streams and open thickets in 

 e. Okla.. n.e. Tex. and the Tex. Panhandle, July-Sept.; from Que. and Me., w. to 

 S.D., s. to Ga., Ala., La. and Tex. 



2. Hackelia floribiinda (Lehm.) I. M. Johnst. 



Plants erect, stout, from a short-lived perennial root, 5-12 dm. tall, the rough 

 pubescence deflexed, mixed with some spreading hairs; leaves oblanceolate to linear 

 or oblong, hirsutulous-appressed, the basal leaves petiolate, with spreading hairs, 

 the stem leaves sessile above; racemes many, rather strict, densely flowered; pedicels 

 5-7 mm. long in fruit; corolla blue, 4-7 mm. broad; appendages small, obscurely 

 papillate, not closing the throat; mericarps 3-5 mm. long, face of mericarp with a 

 median ridge, muriculate, hirsutulous, without short glochidiate prickles, the mar- 

 ginal spines much-flattened at base, distinct or somewhat confluent, 4 to 6 on each 

 side, mostly exceeding in width the face of the mericarp. 



Brushy slopes and edge of woods in Tex. Trans-Pecos and in wet meadows and 

 on seepage slopes in N.M., July-Aug.; mostly w. U.S. and Can., e. to Ont. and 

 Minn. 



3. Myosotis L. Forget-me-not 



About 50 species in Eurasia, Africa, Australia and New Zealand. 



1. Myosotis scorpioides L. Fig. 652. 



Perennial with slender rootstock or stolons; herbage thinly strigulose with 

 straight, pointed hairs; stems 1.5-4 dm. long, decumbent or ascending, rooting 

 at lower nodes; leaves oblanceolate to spatulate, 2.5-8 cm. long, the upper stem 

 leaves sessile, the lower ones narrowed to a winged petiole; racemes slender, 

 loosely flowered, in fruit to 2 dm. long, bractless; fruiting pedicels as long as or 

 longer than the calyx; calyx with straight, appressed hairs, its lobes equal in size, 

 shorter than the tube, more or less spreading in fruit; corolla blue with a yellow 

 eye, the tube longer than the calyx, 6-9 mm. broad; style longer than the nutlets. 



In water of small spring and pond in Ariz. (Coconino Co.), Aug.; nat. of Euras. 

 that escapes from cult. 



4. Mertensia Roth Bluebells 



Glabrous to strigose or hirsute perennial herbs, the hairs not pungent; leaves 

 usually ample; flowers in modified bractless mostly small cymes that terminate 

 the stem and branches; calyx usually cleft to just above or well below the middle, 

 often to the base; corolla blue or sometimes white or pink, mostly tubular below 

 and abruptly expanded at the throat into a shallowly 5-lobed limb, the fornices 

 usually evident; filaments attached at or below the level of the fornices, often 

 conspicuously expanded; nutlets attached to the gynobase at or below the middle, 

 usually rugose. 



About 35 to 40 species, native to extratropical Eurasia and North America. 



1. Leaves strigillose on upper surface; pedicels strigose 1. M. franciscana. 



1. Leaves glabrous or somewhat papillose on upper surface; pedicels papillose 

 or rarely with a few strigose hairs 2. M. ciliata. 



1. Mertensia franciscana Heller. Fig. 652. 



Stems erect or ascending, to about 10 dm. tall, usually several from each root- 

 stock; leaves strigillose on upper surface, glabrous to densely pubescent with 

 spreading hairs on lower surface; basal leaves oblong-elliptic to elliptic, to 15 cm. 

 long and 9 cm. wide, subcordate to cuneate at base, obtuse to acuminate at apex; 



1391 



