LABIATE. (MINT FAMILY.) 319 



notched, the lower spreading, 3-lobcd, witli the middle lobe larger, entire or 

 notched. Stamens 2, short : anther-cells linear, widely separated by the elon- 

 gated oblique connective ; the upper one fertile, the lower imperfect or wanting. 

 Cymes in spikes, racames, or panicles. 



* Upper lip of tlie calyx entire : lower anther-cell wanting. 



1. S. azurea, Lam. Smooth ; stem simple or branched ; leaves lanceolate 

 or linear, obtuse, entire, or the lower ones serrate, tapering at the base ; racemes 

 elongated ; whorls nearly sessile, 6 - 12-flowered ; calyx longer than the pedicel, 

 the teeth ovate, acute; corolla 2-3 times as long as the calyx, white or blue; 

 style bearded. Dry light or sandy soil, Florida to South Carolina, and west- 

 ward. July and Aug. Stem 2 - 4 high. Leaves 1 y - 3' loug. Corolla 6" 



- 8" long. 



2. S. urticifolia, L. Stem (l-2) mostly simple, villous-pubescent and 

 somewhat viscid ; leaves thin, rhombic-ovate, acute, serrate, abruptly contracted 

 into a winged petiole, the upper surface and veins beneath sparse-hairy ; racemes 

 terminal; bracts ovate, acuminate, caducous; whorls 6- 12-flowered, remote; 

 calyx bell-shaped, longer than the pedicel, broadly 3-toothed, about half as long- 

 as the blue and white corolla ; style bearded. 



Var. major. Leaves rigid, narrower, acuminate, crenate, with longer and 

 broader-winged petioles; the lower surface, like the taller (4 -6) branching 

 stem, hoary-tomentose ; racemes axillary and terminal ; flowers smaller. Dry 

 soil in the upper districts of Georgia, and northward: the variety in Middle 

 Florida. July - Sept. Leaves 2' - 4' long. Corolla 4" - 5" long. 



3. S. serotina, L. Stem tomentose, branching ; leaves ovate, mostly 

 acute, crenate-serrate, tomentose, paler beneath, cordate or truncate at the base, 

 petioled ; racemes many-flowered ; whorls mostly 6-flowered, the lower ones 

 rather distant, the upper much crowded ; calyx glandular, longer than the pedi- 

 cel, acutely toothed, the upper lip purple ; corolla small, twice as long as the 

 calyx ; style beardless ; the lower lobe spatulate, acute, the upper short, subulate, 

 reflexed. South Florida. Nov. ; Stem rigid, 1 high. Leaves 1' long, twice 

 as long as the petiole. Corolla blue and white, 3"- 4" long. 



4. S. Blodgettii, n. sp. Stem much branched, shrubby at the base ; 

 branches erect, filiform, pubescent; leaves small, thin, oval or ovate, slightly 

 crenate, rounded at the apex, acute at the base, about as long as the very slen- 

 der petiole ; racemes filiform, few-flowered ; whorls distant, 2 - 6-flowered ; calyx 

 somewhat glandular, acutely toothed, slightly inflated in fruit ; corolla very 

 small ; lower lobe of the style spatulate obtuse. South Florida. Stem 6' - 

 12' high. Leaves 6'' -9" long. Flowers blue, smaller than in No. 3. 



* * Upper lip of the calyx broad, 3-toothed : lower anther-cell pollen-bearing, but sterile. 



5. S. lyrata, L. Hairy ; stem erect, sparingly branched ; leaves chiefly 

 radical, spreading, lyrate-pinnatifid, mostly discolored ; stem-leaves 2 or 4, 

 smaller ; the upper pair lanceolate and entire ; raceme many-flowered ; whorls 

 6-flowercd, distant in fruit, longer than the ovate-lanceolate bracts ; upper lip of 

 the bell-shaped calyx truncate, with short erect teeth ; corolla-tube elongated, 



