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2 Leaves mostly (3-) 4-8 (-9) cm long, with the primary lateral leaf veins in 3-5 pairs; leaf apex acute to abruptly acuminate; abaxial midvein covered by epidermis; flowers short-pedicellate on pedicels 0.5-2 mm; corolla tube hardly exserted from calyx, ca. equal lobe length | |
5 Leaf blades narrowly oblong-elliptic to oblanceolate-elliptic, oblanceolate or narrowly obovate, usually broadest slightly above the middle; inflorescence usually narrowly cylindric, flowers sessile to subsessile in verticil-like clusters | |
5 Leaf blades variously shaped; inflorescence broadly cylindric to pyramidal, flowers sessile to pedicellate in broadly cylindric to pyramidal panicles of cymes. | |
6 Corolla tube 1.5-3× longer than the lobes. | |
7 Leaf blades usually sparsely villous abaxially; calyx and pedicels sparsely to densely hirtellous (rarely nearly glabrous); corolla tube 2-3× as long as the lobes | |
7 Leaf blades usually glabrous abaxially; calyx and pedicels glabrous to very sparsely hirtellous; corolla tube 1.5-2× as long as the lobes | |
6 Corolla tube < 1.2× as long as the lobes. | |
8 Leaves ovate-elliptic to oblong-ovate, elliptic-lanceolate, or suborbicular, primary lateral veins (3-) 4-5 pairs, apex obtuse to rounded or retuse, abaxial midvein usually sparsely hirsutulous to puberulent; inflorescence diffuse and open panicles terminal and on essentially leafless, lateral branches interspersed with leafy ones; branchlets hirtellous to loosely substrigose with straight hairs of uneven length; corolla tube slightly shorter than lobes, often barely exserted from the calyx tube; pedicels glabrous | |
8 Leaves elliptic-lanceolate to elliptic-ovate, primary lateral veins 4-6 pairs, apex obtuse to acute, abaxial midvein usually glabrous or with a few scattered hairs; inflorescence mostly a compact, terminal panicle; branchlets evenly and minutely hirtellous to hirsutulous with relatively even-length hairs; corolla tube equal the lobes or slightly shorter, distinctly exserted from the calyx tube; pedicels hirtellous |