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Key to Clinopodium

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1 Flowers 1 per leaf axil
1 Flowers > 1 per leaf axil.
..2 Plant a shrub, not flowering the first year; [of sandy or rocky habitats of the Coastal Plain and Piedmont, from s. NC southward].
....3 Corolla bright scarlet, 27-50 mm long; calyx 8-18 mm long.
......4 Corolla 27-40 mm long; calyx 8-11 mm long; [GA, Panhandle FL, s. AL, s. MS, and peninsular FL]
......4 Corolla 40-50 mm long; calyx 12-15 mm long; [peninsular FL]
....3 Corolla light lavender or pink with darker spots, 10-20 mm long; calyx 5.0-7.5 mm long.
........5 Leaves ovate or elliptic, often serrate, not revolute; leaves petiolate.
..........6 Lower calyx lobes with short antrorsely appressed pubescence (to 0.2 mm long) along margin and on the outer surface
..........6 Lower calyx lobes with long erect pubescence (to 0.7 mm long) along margin only, the outer surface glabrous
........5 Leaves linear to linear-elliptic, entire, strongly revolute; leaves subsessile; leaf surfaces minutely and densely pubescent
............ 7 Leaves obovate to ovate, with 1-3 (-5) dentate teeth in the upper third, glabrous; calyx short stipitate glandular, lower lobes long ciliate; upper calyx lobes deltoid, acute
..2 Plant an herbaceous to suffrutescent perennial, often flowering the first year; [of various habitats, collectively widely distributed in our area].
............ ..8 Stem glabrous or pubescent at the nodes only; leaves of flowering stems linear to oblanceolate; [native, of limestone glades, barrens, and bluffs].
............ ....9 Plant stoloniferous, bearing leafy stolons with ovate leaves; leaves of the flowering stems 1-2 cm long, 1-5 mm wide, entire
............ ....9 Plant not bearing leafy stolons; leaves of the flowering stems oblanceolate, 2.5-5 cm long, 5-17 mm wide, with several teeth on each side
............ ..8 Stem pubescent; leaves of flowering stems elliptic to ovate; [exotic or native, generally of disturbed or weedy situations].
............ ......10 Axillary flower clusters in peduncled, contracted cymes.
............ ........11 Calyx 6.0-10.2 mm long, the hairs inside the throat barely or not exserted; blades of larger stem leaves 2-5 cm long
............ ........11 Calyx 2.8-6.0 mm long, the hairs inside the throat exserted, prominent; blades of the larger stem leaves 0.8-2.4 cm long
............ ......10 Axillary flower clusters sessile, dense.
............ ..........12 Corolla 7-22 mm long; calyx 4.5-10 mm long.
............ ............ 13 Whorls with 8 or fewer flowers; calyx 4.5-7 mm long; corolla 7-10 mm long
............ ............ 13 Whorls with > 8 flowers; calyx 7-10 mm long; corolla 12-22 mm long
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