An herb differing from other Agastache by having attenuate calyx teeth 1/4 the total length of the calyx or more, herbaceous stems, a calyx tube that is straight or nearly so and 2-4 mm in diameter when pressed, with straight and conspicuous costae. ...
Profusely branched, erect perennial, woody only at very base; stems 20-80 cm long; leaves triangular-ovate or triangular-lanceolate, 1-2.5 times longer than wide, 5-40(80) mm long, dull to bright green above, paler below, thinly pubescent; flowers pi...
Herbaceous perennial from a woody caudex; stems sparsely pubescent, 30-50 cm long; leaves glabrous, the lower elliptic to lanceolate, 6-10 mm wide, the upper linear, 1 mm broad; calyx lobes awl-shaped, glabrous or sparsely ciliate, 5-6 mm long; corol...
Rhizomatous perennial; foliage strigose; stems 2-4 dm, clustered, ascending or decumbent; leaves 4-10 cm; leaflets 13-25, obovate to narrowly oblong, 5-15 mm long, 2-6 times longer than wide, flat or folded, often glabrate above; lower stipules conna...
Matted perennial from woody rootstocks; stems to 5 cm high; sparsely pubescent with ascending or loosely appressed hairs, terminated by a solitary flower head; basal rosettelike leaves clustered, spatulate or lance shaped, spiny at the tip, 1.5-6 mm ...
Escobaria orcuttii is distinguished by the relatively even and short length of the central spines, which seem to grade into the radial spines of similar length. This gives the plants something of a "groomed" appearance. Stems solitary, few in a cl...
Stems solitary, growing in clumps, or commonly branched to form small dense clusters, the individual stems mostly 2-4 cm thick and to 15 cm long; tubercles on mature stems with upper surface bearing a groove; spines with a yellowish cast often reddis...
Stems solitary, few in a clump, or commonly branched to form small dense clusters of 20 or more stems, the individual stems mostly 2-4 cm thick, to 15 cm tall; tubercles on mature stems with upper surface grooved; spines about 20-60 per areole, sprea...
Annual, 1-2 m tall, branched above, stem glabrous to hispid; leaves opposite below, alternate above, up to 17.5 cm long by 8.5 cm wide, lanceolate with 3 prominent veins, base tapering to a short petiole, margins entire except for a few prominent tee...