Hyptis uliginosa A.St.

O’Leary, Nataly, 2015, Synopsis of subtribe Hyptidinae (Lamiaceae) in Argentina, Phytotaxa 233 (3), pp. 201-235 : 228

3.12. Hyptis uliginosa A.St. -Hil. ex Bentham (1833: 81). Fig. 18

≡ Mesosphaerum uliginosum (A. St.-Hil. ex Benth.) Kuntze (1891: 527). Type :— BRAZIL. Sao Paulo, “prope Itagui”, A. de Saint Hilaire (holotype P 737373 !; isotype F 92132 !, K 488319 !, P 737374 !, P 737375 !) .

Perennial herbs, procumbent at the base, up to 0.35 m high. Leaves sessile, narrow ovate blade, 2–3 × 0.5–1 cm, acute or obtuse apex, amplexicaul base, glabrous with sessile glands, finely serrate margin. Capitula 0.4–0.9 cm diam., 20–30 flowered, solitary, axillary to superior leaves, peduncle 0.6–2 cm long. Bracteoles 2.5–4 mm long, elliptic, glabrous. Calyx 1.5 mm up to 3 mm in fruit, curving down, exterior pilose with some sessile glands, interior glabrous; teeth deltoid, unequal, the largest one shorter than 0.5 mm. Corolla white or pink color, 3–3.5 mm long. Nutlets ovoid, 0.8 mm long, light brown, smooth.

Distribution and habitat:— Hyptis uliginosa is found in southern Brazil and with an outlying record in N Minas Gerais, and northeastern Argentina in the province of Misiones.

Selected specimens examined:— Misiones. Gral. M. Belgrano, al norte de Dos Hermanas, 1 February 2008, Keller 4976 (CTES!).

Figures

FIGURE 18. Hyptis uliginosa A.St.-Hil. ex Bentham (from Keller 141, CTES and Keller 4976, CTES). A. Plant general aspect. B. Calyx.