( 286‘) 
The species above described is allied to Dasystoma Vzr- 
ginica but is less robust inhabit. In the flower we find nar- 
rowly lanceolate and larger calyx-segments and much more 
elongated corollas which are quite suggestive of those organs 
in certain Big nonias. The original specimens were collected 
by Dr. Burrows, at Tampa Bay, Florida, in 1834. Speci- 
mens from Georgia collected by Dr. Boykin seem also to be 
referable here. 
PHYSOSTEGIA LEPTOPHYLLA. 
Perennial, from creeping or horizontal rootstocks. Foli- 
age deep green, glabrous or nearly so below, puberulent 
above, especially in the inflorescence: stems erect or ascend- 
ing, 6-10 dm. long, simple, regularly leafy to near the 
raceme, rather slender: leaves few; blades thin, oblong or 
some slightly broadest above or below the middle, obtuse or 
acute above, repand, narrowed into margined petioles ; these % 
as Jong as the blades near the base of the stem, much shorter 
above or the upper pairs of leaves with sessile blades: ra- 
cemes spike-like, 1-3 dm. long, slender, remotely-flowered : 
pedicels 1-3 mm. long, often as long as the bracts at matu- 
rity: calices 5—6.5 mm. long; tubes turbinate or campanulate 
in age, accrescent, somewhat inflated at maturity, faintly rib- 
ded, much longer than the pedicels; segments triangular to 
lanceolate, acute or acuminate, about % as long as the tube: 
corolla blue, about 2 cm. long; tube rather abruptly dilated 
just beyond the calyx, especially dilated beneath; lips about 
one-third as long as the tube: nutlets suborbicular, 3-3.5 mm. 
long, with sharp edges. 
On river shores, peninsular Florida. Spring to fall. 
This species is related to Physostegia denticulata and 
through it to P. Digztal’s and P. Virginiana. Its diagnostic 
characters are indicated as follows: 
Mature calices tubular, 9-11 mm. long; upper leaves conspicuously reduced. 
P. denticulata. 
Mature calices campanulate, 5-6 mm. long; upper leaves only slightly re- 
duced. P. leptophylla. 
The original specimens were collected by Dr. A. P. Gar- 
ber in the Manatee River, Florida, June, 1878 (So. Fla. Fl., 
no. 10). Specimens apparently referable to this species were 
collected many years ago by Dr. Chapman, no data, except 
Florida is recorded on the label. 
