36 
verticillatum. 
vulgare. 
vulgare. 
DIDYNAMIA, GYMNOSPERMIA. 
about half a mile south-east of the corner of Federal and Fifth 
streets, Southwark. Very rare. Perennial. July. 
5. P. leaves ovate-lanceolate, very entire; whorls 
sessile, compact, bractes acuminate.—FPers. and 
Pursh. 
Brachystemum verticillatum, Mich. 
Origanum clinopodoides, Walt. 
Icon. Mich. Fl. am. 2. t. 31. 
This species resembles No. 4, exceedingly. It is also very 
rare; I have only found it on the bank walk from Gray’s ferry 
to Kingsess gardens, in the low ground. Perennial. July, 
August. 
274, CLINOPODIUM. Gen. pl. 980. (Labiate.) 
Verticill surrounded by a setaceous involu- 
crum.—Upper lip of the corolla flat, ob- 
cordate and strait.—WNutt. 
1. C. capituli verticillate, bractes setaceous, his- 
pid; leaves hairy above, remotely dentate, stem 
nearly simple.—Willd. 
Icon. Fl. Dan. 930. Engl. Bot. 1401. 
Common Wild Basil. 
About a foot high; flowers purple, and sometimes, though 
rarely, white. In dry fields, and in dry thickets. Perennial. 
August. 
275. ORIGANUM. Gen. pl. 981, (Ladiate.) 
Flowers collected into a 4-sided strobilus or 
dense spike.—Upper lip of the corolla 
erect, flat; lower 3-parted; segments equal. 
— Nutt. 
1. O. spikes subrotund, paniculate, conglomerate, 
bractes ovate, longer than the calix.—Willd. . 
Icon. F]. Dan. 638. 

