180 POPULAR FLORA. 



Calyx not 2-lipped, 10-tnothed. Clusters axillary, head-like, {Marriibium) Horetiouni> 

 Calyx not 2-Iipped and only 5-toothed, 



Funnel-shaped and much larger than the corolla, (Moluccella) *]\Iolucca-Balm. 



Bell-shaped or top-shaped, much shorter than the corolla. 



Anthers opening crosswise: calyx-teeth spiny-pointed, {Galeopsis) Hemp-Nettle. 

 Anthers opening lengthwise. 



Corolla not enlarged in the throat: stamens turned down after shed- 

 ding their pollen, {Stathys) Hedge-Nettle. 

 Corolla enlarged in the thi'oat: calyx-teeth not spiny, (Lamium) Dkad-Nettle. 

 Corolla not enlarged in the throat: calyx top-shaped with ppiny 



teeth. Akenes 3-angled. Leaves cleft and cut, {Ltoaurus) Mothehwokt. 



Mint. Menllia. 

 Herbs ■with sharp-tasted leaves and small whitish or purplish flowers: upper lobe of the short co- 

 rolla either entire or notched. 



1. Wild ifiNT. Flowers in head-like clusters around the stem in the axils of the petioled leaves; 



plant hairy, or in one variety smoothish. Wet places. J/. Canadensis. 



2. Peppermint. Smooth; clusters of flowers crowded in short spikes; leaves petioled, oblong or 



ovate. M. piperita. 



3. SpeaPvJmnt. Nearly smooth," spikes panicled; leaves lance-ovate, almost sessile. M. viiidis. 



Horse-Mint. Mondrda. 

 Herbs with mostly simple stems, and rather large flowers in close head-like clusters at the summit 

 of the stem, and around it in the axils of the upper leaves, surrounded by large bracts. 

 * Root perennial: upper lip of the narrow corolla entire, the 2 stamens projecting from it: leaves 

 lance-ovate or slightly heart-shaped. 



1. Ral:^! H. or Oswego Tea. Green, rather hairy; corolla long, bright red; uppermost leaves and 



bracts tinged with red. Moist banks, N., and in gardens. J/, didyma. 



2. Common H. Pale, smoothish or soft downy; flowers purplish or whitish, smaller. M.Jistulbsa. 



* * Root annual: upper lip of the corolla notched: stamens not projecting. 



3. Dotted H. Leaves lance-shaped ; bracts yellowish and purple; corolla yellowish, purple-spotted. 



Sandy soil, S. J/, punctata. 



Scullcap. Scutellaiia. 

 Well marked by the tubular ascending corolla (mostly blue or bluish-purple) with a strongly arched 

 upper lip; the calyx with two short entire lips, closed after the corolla falls, and having an enlargement 

 on the back, the whole becoming of the shape of a helmet. Fl. summer. 



* Flowers small, in axillary one-sided racemes. 



1 Mad-dog S. Smooth, branched, slender; leaves lance-ovate or oblong, pointed, serrate, on sleiider 



stalks. Wet places. jS. lalemjlbra, 



* * Flowers in terminal racemes. 



3. Larger S. Hairy and rather clammy, lo to 3° high; leaves heart-shaped or ovate, wrinkled' 



veiny; upper lip of the corolla blue, the lower pale and purple-spotted. S. and W. S. versicolor. 



3. Hairy S. Hairy, 1^^ to 3° high, slender; leaves ovate, crenate, obtuse, veiny. S.pUdsa. 



