696 



LABIATAE (mint FAMILY) 



t- -^ Flowers 5-10 mm. long; leaves at most 2 cm. long. 



11. S. pdrvula Michx. Herbaceous; subterranean stolons monilifo'f m-tuber- 

 iferous; pubescent throughout with spreading often viscid hairs, dwarf (0.8-3 

 dm. high), branched and spreading ; all but the lower leaves sessile and entire 

 or sparingly toothed, the lowest round-ovate, the others ovate or lance-ovate, 

 slightly heart-shaped ; flowers axillary. (Including var. mol- 

 lis Gray ; S. campestris Britton.) — Sandy banks, Vt. and 

 w. Que. to Mich. , s. to Term, and Tex. Apr.-July. 



Var. ambfgua (Nutt.) Fernald. Minutely puberulent or 

 glabrate. (/S. parvula Britton, not Michx.) — Me. to Wise, 

 Ky., and Tex. 



§2- 



Nutlets conspicuously winged, each raised on a slender 

 base. 



8. nerTosa. 

 Ad upper node x ^ 

 Nutlet X 5. 



12. S. nerybsa Pursh. Smooth, simple or branched, 

 slender, 1.5-5 dm. high ; lower leaves roundish, the middle 

 ovate, toothed, somewhat heart-shaped, 2-4.5 cm. long, the 

 floral ovate-lanceolate, entire ; nerve-like veins prominent beneath ; corolla bluish, 

 1 cm. long, the lower lip exceeding the concave upper one. — Moist thickets and 

 rich woods, s. Ont. and N. Y. to Mo. and N. C. Fig. 888. 



6. MARRtrBIUM [Toum.] L. Horehound 



Calyx-teeth more or less spiny-pointed and spreading at maturity. TTpper 

 lip of the corolla erect, notched, the lower spreading, 3-cleft, its middle lobe 

 broadest. Stamens 4. — Whitish-woolly bitter-aromatic perennials, branched 

 at the base, with rugose and crenate or cut leaves, 

 and many-flowered axillary whorls. (A name used 

 by Pliny, from the Hebrew marrob, a bitter juice.) 



1. M. vuLoiKE L. (Common H.) Stems ascend- 

 ing ; leaves round-ovate, petioled, crenate-toothed ; 

 whorls capitate ; calyx with 10 recurved teeth, the 

 alternate ones shorter ; corolla small, white. — Waste 

 places, Me. to Ont., westw. and southw. June-Aug. 

 (Nat. from Eu.) Fi&. 889. 



®. M. vnlg^are. 

 Node X %. Fruiting calyx x 2, 



7. AGAsTACHE Clayt. Giant Hyssop 



Calyx tubular-bell-shaped, 15-nerved, oblique, 5-toothed, the upper teeth 

 rather longer than the others. Upper lip of corolla nearly erect, 2-lobed, the 

 lower 3-clett, with the middle lobe crenate. Stamens 4, exserted ; the upper 

 pair declined, the lower and shorter pair ascending, so 

 that the pairs cross ; anther-cells nearly parallel. — 

 Perennial tall herbs, with petioled serrate leaves, and 

 small flowers crowded in interrupted terminal spikes 

 in summer. (From fiya;', much, and o-rdxi's, an ear 

 of corn, in reference to the numerous spikes.) Lo- 

 PHANTHUS Benth., in part. 



1. A. nepetoides (L.) Ktze. Stem stout, 0.7-1.5 m. 

 high, sharply 4-angled, smooth or nearly so ; leaves 

 ovate, somewhat pointed, coarsely crenate-toothed, 

 5-12 cm. long ; spikes 3-12 cm. long, crowded with 

 the ovate pointed bracts ; calyx-teeth ovate, rather 

 obtuse, little shorter than the pale greenish-yellow 

 corolla. (Lophanthiis Benth.) — Borders of woods, 

 <r. Mass., Vt., and w. Que. to Minn., and southw. 



2. A. scrophulariaefdiia (Willd.) Ktze. Stem (ob- 

 tusely 4-angled) and lower surface of the ovate or 

 somewhat heart-shaped acute leaves slightly pubescent I 



A. 6Crophulariaefolia. 

 Node and spike x %. 

 Floiyer x 2. 



