354 LABIATE, Hi/ssopm. 



tate : flowers in pedunoled loose cymes, rudiments of the upper pair of stamens generally 

 apparent. — Spec. ed. 2, i. 30 ; Bart. Med. Bot. t. 42 ; Lodd. Bot. Cab. t. 120-5 ; Sweet, Brit. 

 Fl. Gard. t. 240 ; Torr. Fl. N. Y. t. 7G. Satureia origanoides, L., ed. 1. — Dry soil, S. New 

 York and ()iiio to Georgia. 



12. HYSSOPUS, Tourn. Hyssop. (The ancient name, from a Hebrew 

 word.) Only one species. 



H. OFFICINALIS, L. Perennial herh, with somewhat woody base, virgate branches, lanceo- 

 late or linear entire leaves, and blue-purple flowers in small sjiikcd clusters, in sunmier. — 

 Sparingly on roadsides eastward, and in California, escaped from gardens. (Nat. from 

 Eu. and Asia.) 



13. PYCNANTHEMUM, Michx. Mountain Mint or Basil. (From 

 IIvHvog, dense, uvOshqv, blossom : glomerate inflorescence.) — Perennial erect 

 herbs (all N. American, and all but one eastern), pleasantly pungent-aromatic, 

 branching above ; with capitate-verticillastrate glomerules or dense cymes (com- 

 monly multibracteate) in the upper axils, or mainly cymosely terminal ; flowers 

 small, whitish or purplish, often purple-dotted, in summer. — INlichx. Fl. ii. 7, with 

 Br achy sternum, 1. c. 5 ; Gray in Am. Jour. 8ci. xlii. 44. 



§ 1. Flower-clusters naked in a terminal corymbose cyme, small, rather dense ; 

 the proper bracts minute and loose : calyx short-tubular ; the teeth equal : leaves 

 sessile and small. 



P. midiam, Nutt. Nearly glabrous ; stem strict, 2 feet high : leaves oval, nearly entire, 

 less than inch long, shorter than the internodes : calyx-teeth triangular, villous. — Gen. ii. 

 34. — Low pine barrens, N. Carolina ? to Florida, Alabama, &c. 



§ 2. Flowers densely verticillastrate-cymose or glomerate, usually conspicuously 

 much bracted : calyx oblong or short-tubular. (Many of the sjDCcies difficult of 

 discrimination, perhaps on account of hybridizing.) 



* Bracts and equal calyx-teeth arLstate-tipped, rigid, naked, equalling the corolla : leaves slightly 

 potiolcd, rather rigid. 

 P. aristatum, MicllX. Minutely soft-puberulent, mostly cancscent : leaves ovate- and 

 lanceolate-oblong, sparingly denticulate ; flower-clusters dense or capitate, terminal. — Fl. 

 ii. 8, t. 33. P. vciiicilhitnm, Fursh, not Michx. P. setosam, Nutt. in Jour. Acad. Philad. 

 vii. fOO. Oriijannm iiinniinii, Walt. — Pine barrens. New Jersey to Florida and Louisiana. 



Var. hyssopifolium, Gray, 1. c. (P. /u/ssopifullam, Benth.) : leaves narrowly 

 oblong or almost linear, nearly entire, obtuse. — Virginia to Florida. 



* * Bracts and equal (or later species nearly equal) and similar calyx-teeth not aristate. 

 •i— Leaves linear or lanceolate, nearly sessile, entire, mostly glabrous, very numerous throughout 

 the stems and copious branclilets : "capitate glomerules small and niunerous, densely fastigiale- 

 cymose, copiously iml)ricaied with short appressed rigid and subulate-pointed or acute bracts, 

 wliicii do not exceed the equally 5-toothed calyx : lips of the corolla very short. (Braclnjstemum 

 Virfjinicum, Michx.) 

 P. linifolium, Pursh. Glabrous up to the cancscent inflorescence, 2 feet high, slender : 

 leaves linear, somewhat 3-nerved : bracts subulate or cuspidate-tipped from a broad base : 

 calyx-teetli lanceolate-subulate, rigid-pointed. — Fl. ii. 409. .'Satureia Vinjiniana, L., as to 

 syn. Pluk. Ktjcllia capkata, Moench, Meth. 408. Brachijstemum linifolium, Willd. Enum. 623. 

 Pi/niaril/tfiinum tenni/olinm, Schrad. Hort. Gott. 10, t. 4. — Dry ground, Massachusetts to 

 Illinois, Florida, and Texas. 

 P. lanceolatum, Pursh, 1. c. Stem stouter and somewhat pubescent : inflorescence 

 villons-canescent : leaves lanceolate or almost linear, nervose-veined, obtuse at base : 

 bracts ovate or lanceolate : calyx-teeth ovate-deltoid, merely acute — Satureia Vinjiuiana, 

 Herm. Parad. t. 218 ; L. Spec. ii. 567. T/ii/mus Virrjinicus, L. Mant. 409. T. lanccolatus, 

 Poir. Suppl. V. 305. Ncpeta Vin/micn, Willd. Spec. iii. 56. Brach/jstcmum lanceolatum, Willd. 

 Enum. 023. Pijcnantlwmnm Virrjinicum, Pers. Syn. ii. 128. — Dry ground, Mass. and Canada 

 to Nebraska and Georgia. 



