180 POPULAR FLORA. 



Calyx not 2-lippecl, 10-toothed. Clusters axillary, head-like, (^Marrithimn) IIoREiiouxn. 

 Calyx not 2-lippe(l and only 5-toothed, 



Funnel-shaped and much larger than the corolla, {Molucciilla) *Molucca-Balm. 



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



Anthers opening crosswise: calyx-teeth spiny-pointed, (Galcopsis) Hemp-Nettle. 

 Anthers opening lengthwise. 



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

 ding their pollen, (Stachys) Hedge-Nettle. 

 Corolla enlarged in the throat: calyx-teeth not spiny, (Lamium) Dead-Nettle. 

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



teeth. Akenes 3-angled. Leaves cleft and cut, {Ltonurus) Mothekwokt. 



Mint. Mentha. 

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

 rolla either entire or notched. 



1. Wild Mint. 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\I. Canadensis. 



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



ovate. -^i- piperita. 



3. Spearmint. Nearly smooth ; spikes panicled ; leaves lance-ovate, almost sessile. M. viridis. 



Horse-Mint. Mondrda. 

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

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

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



lance-ovate or slightly heart-shaped. 



1. Balm H. or Oswego Tea. Green, rather hairy ; corolla long, bright red; uppermost leaves and 



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



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



* * 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. ^- punctata. 



' ScuUcap. SczUellaria. 



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



stalks. Wet places. S. latei-iflora. 



* * Flowers in terminal racemes. 



2. Larger S. Hairy and rather clammy, 1° 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.jnlosa. 



