UYDROniYIXACE^E. (WATEULEAF FAMILY.) 333 



1. M. laxa, Lohm. Smooth, or slightly roughened -witli apprcssed scat- 

 tered luiirs; stem weak, slender, erceping at the base, branehing; leaves lanee- 

 olatc, obtuse, the lowest spatulatc ; racemes elongated in fruit; (lowers distant, 

 on widely spreading pedicels ; calyx hispid with straight hairs, tlic teeth equal 

 and obtuse ; corolla pale blue. — Low grounds, Florida to Mississippi, and 

 north\\;ird. JIay. Q) — Stem 1° high. Leaves 1'- 1^' long. 



2. M. verna, Nutt. Hirsute with rigid spreading hairs ; stem erect (4' - 8' 

 high), branching above; leaves lanceolate, sessile; the lower ones spatulate, ob- 

 tuse ; calyx longer than the appressed pedicel, hispid, with tiic hairs near the 

 base hooked ; tiie teeth unequal, acute. — Var. biackospekjia is every way 

 larger (1°- H° high) ; calyx with all the hairs hooked, tlic lower teeth twice as 

 long as the upper ones. — Dry places in the upper districts, and northward; 

 the variety, Florida, and westward. March and April. (T) — Corolla white or 

 pale blue. 



IL CYNOGLOSSUM, Tourn. IIouxd's-Toxguk. 



Calyx 5-parted. Corolla funnel-form, with the throat closed with 5 obtuse 

 scales. Stamens incUided. Kuilcts 4, fixed near tlie apex to the base of the 

 style, covered all over with barbed or hooked bristles- — llacemes with the lower 

 flowers commonly bracted, the upper ones bractless. 



1. C. oflacinale, L. Villous; stem leafy, branched above ; leaves lanceo- 

 late or oblong, acute ; the upper sessile, the lowest tapering into a long petiole ; 

 racemes hoary, nearly bractless ; nutlets flattened anteriorly and slightly mar- 

 gined ; corolla reddish-violet. — Waste grounds, North Carolina, and northward. 

 Introduced. — y tern U°-2° high. 



2. C. Virginicum, L. Hispid; stem simple, stout, naked above ; leaves 

 oval or oblong ; the lowest petiolcd, the upper auiiculatc and clasping; racemes 

 single or corymbose, bractless ; pedicels slender, recurved in fruit ; nutlets 

 rounded anteriorly ; corolla pale blue. — Dry soil, Florida to Mississippi, and 

 northward May and June. — Stem 2° -3° high. Lowest leaves G'-'J' long. 

 Nutlets 1-4. 



3. C. Morisoni, DC. Hairy ; stem erect, rather slender, -widely branched ; 

 leaves laneeohue-ublung, acute ; the lowest tapering into a petiole ; racemes 

 numerous, slender, villous, bracted ; pedicels short, recurved in fruit ; corolla 

 small, al)out as long as the calyx, white or pale blue. (Myosotis Virginiana, 

 Pursh.) — Dry woods in the upper districts of South Carolina and northward. 

 June and July. — Stem 2° - 3° high. 



Order 9G. IIYDROPHYLLACE^. (Waterleaf 

 Family.) 



Herb.?, with alternate or (the lowest) opposite palmatcly or pinnately 

 divided leaves, and reirular flowers, either solitary in the axils, or in 

 l-si(led recurved spikes or racemes. — Calyx 5-parted, persistent; the 



