998 BOKRAGINACEAE 



b. Pedicels shorter than the calyxes. 



Fruiting racemes with many approximate erect or ascending pedicels : calyx 



less than 5 mm. long at maturity : seeds 1.5 mm. long. 4. M. Virginica. 



Fruiting racemes with few more or less recurving pedicels : calyx over 5 



mm. long at maturity : seeds 2 mm. long. 5. M. macrosperma. 



1. Myosotis palustris (L. ) Lam. Stems pubescent with appressed hairs, soon de- 

 cumbent and creeping, 2-6 dm. long, branching : leaf -blades spatulate to oblong or oblong- 

 lanceolate, obtuse or acutish, entire, the lower often short-petioled, the upper sessile : 

 racemes elongating, much interrupted : pedicels 4-7 mm. long, spreading : calyx-lobes 

 triangular, shorter than the tube : corolla sky-blue and with a yellow eye, 6-8 mm. broad : 

 nutlets shining, about 1.5 mm. long. 



In low grounds or brooks, Nova Scotia to New York and Georgia. Spring and summer. Natural- 

 ized from Europe. 



2. Myosotis laxa Lehm. Stems strigillose, soon decumbent, creeping, 1-5 dm. 

 long, branched : leaf-blades spatulate, oblong or oblong-lanceolate, 1-8 cm. long, obtuse, 

 entire, the flower ones short-petioled, the upper sessile : racemes elongating, interrupted : 

 pedicels spreading, 5-10 mm. long : calyx-lobes triangular or triangular-lanceolate, as long 

 as the tube or longer, acute : corolla mainly pale-blue ; limb concave, 4-6 mm. broad : nut- 

 lets about 1 mm. long, lenticular. 



In low grounds and swamps. Nova Scotia and Ontario to Georgia and Tennessee. Spring and 

 summer. Also in Europe. 



3. Myosotis arv<nsis (L.) Willd. Stems hirsute, erect, 1-3 dm. tall, loosely 

 branched above : leaf-blades spatulate to oblong or oblong-lanceolate, 1-5 cm. long, obtuse 

 or acutish, entire, sessile or nearly so : racemes loosely flowered, elongating : pedicels 2-5 

 mm. long, spreading : calyx bristly ; lobes equal or nearly so, lanceolate or linear-lanceo- 

 late, 2-3 mm. long: corolla white or mostly blue ; limb 2-3 mm. broad, concave : fruit 

 enclosed in the calyx : nutlets oblong, 1.5 mm. long. 



In waste places, New Brunswick to Ontario, Minnesota, North Carolina and West Virginia. Sum- 

 mer. Also in Europe. 



4. Myosotis Virginica (L.) B.S.P. Stems hirsute, erect, 1-4 dm. tall, the branches 

 strongly ascending or erect : leaf-blades spatulate to oblong or oblong-lanceolate, 1-3 cm. 

 long, obtuse or acutish, entire, sessile : racemes elongating, loosely flowered : pedicels 1-3 

 mm. long, erect or ascending : calyx beset with spreading hairs, those near the base 

 hookjed ; lobes unequal, lanceolate, often narrowly so, 2-3 mm. long, acute : corolla white ; 

 limb 2.5-3 mm. broad : fruit enclosed in the calyx : nutlets elliptic, a little more than 1.5 

 mm. long. [Myosotis verna Nutt.] 



In dry soil and on open hillsides, Maine to Ontario, Minnesota, Florida and Texas. Spring. 



5. Myosotis macrosperma Engelm. Stems hirsute, erect, 2-5 dm. tall, loosely 

 branched : leaf-blades spatulate to oblong or oblong-lanceolate, mucronate, entire, sessile : 

 racemes much interrupted, elongating : pedicels ascending or spreading, 3-5 mm. long : 

 calyx beset in hooked hairs ; lobes very unequal, lanceolate to linear-lanceolate, the lower 

 4-5 mm. long, twice as long as the upper : corolla white, 4-5 mm. broad : fruit enclosed 

 in the calyx : nutlets oblong-obovoid, over 2 mm. long. 



On hillsides, Maryland to Arkansas, Florida and Texas. Spring. 



6. LITHOSFERMUM L. 



Annual or perennial caulescent herbs, often with large or long colored roots. Leave* 

 alternate : blades entire. Flowers in bracted spikes or racemes. Calyx pubescent : lobes 

 5, narrow. Corolla white, yellow or -blue, salverform or funnelform, the tube with a naked 

 pubescent or appendaged throat : lobes 5, entire, erose or toothed. Stamens 5, included. 

 Ovary of 4 nearly distinct carpels. Stigmas capitate or 2-lobed. Nutlets 4 or fewer, white 

 and shiny or brown and wrinkled, attached by their bases to the almost flat receptacle, 

 GROMWELL. PUCCOON. 



Annual plants : corolla white or whitish, slightly surpassing the calyx. 



Pubescent with appressed hairs : bracts of a linear type : corolla about 6 mm. long. 



1. L. arvense. 



Hirsute or hispid : bracts of an oblong type : corolla about 4 mm. long. 2. L. Matamorente. 



Perennial plants : corolla yellow or sometimes greenish white. 



Cauline leaves with broadly linear or oblong-linear blades: nutlets papillose, 



spurred near the base. 3. L. mirabile. 



Cauline leaves with broader blades, mainly elliptic or oblong : nutlets sparingly 



and shallowly pitted. 

 Corolla-tube shorter than the calyx or but slightly surpassing it. 



Pubescence of stem strictly appressed. 4. L. laUfolirm. 



Pubescence of stem more or less spreading. 5. L. tuberosum. 



Corolla-tube, of the complete flowers, much longer than the calyx, the 

 limb deep yellow or orange. 



