Cantinoa stricta (Benth.) Harley & Pastore (2012: 12)

O’Leary, Nataly, 2015, Synopsis of subtribe Hyptidinae (Lamiaceae) in Argentina, Phytotaxa 233 (3), pp. 201-235 : 206-208

1.3. Cantinoa stricta (Benth.) Harley & Pastore (2012: 12) . Fig. 3

≡ Hyptis stricta Bentham (1833: 121) ≡ Mesosphaerum strictum (Benth.) Kuntze (1891: 527) . Type (lectotype originally designated in B by Epling 1936: 245, destroyed; replaced lectotype designated by Harley & Pastore 2012: 12):— BRAZIL. Rio Grande do Sul, Cerro Agudo, 23 March 1823, F. Sellow 4580 (K 488241!).

Erect herbs, aromatic, 1 m high, basal stems decumbent, hispid. Leaves sessile or with a short petiole, 0.25–0.8 cm long, blade ovate, 2–6 × 1–2 cm, obtuse apex, base truncate or attenuate base, serrate or crenate margin, adaxial surface with slightly strigose pubescence, abaxial surface hispid or strigose. Flowers grouped in densely congested, more than 15- flowered cymes, sessile or with a short peduncle, up to 6 mm long, surround by an involucre of numerous bracteoles, narrow elliptic, 2–4 mm long, inconspicuous. Cymes arranged in elongated panicles, with ascending branches. Calyx 3–5.5 mm long, sub-glabrous to slightly strigose, teeth subulate, 0.5–1 mm, stiff. Corolla white or pale blue or blue color, 3–4 mm long, Stigma 7 mm long. Nutlets ellipsoid 1–1.5 mm, smooth, dark brown.

Distribution and habitat:— Cantinoa stricta grows in southern Brazil, Paraguay, northeastern Argentina and northern Uruguay.

Selected specimens examined: — ARGENTINA. Corrientes: Santo Tomé, Ea. Rincón de las Mercedes, 13 February 1960, Pedersen 5423 (K!). Misiones: Candelaria, Yabebuy, 17 April 1951, Montes 15085 (SI!). San Ignacio, San Ignacio, 22 March 1951, Montes 15121 (SI!).

Figures

FIGURE 3. Cantinoa stricta (Benth.) Harley & Pastore (from Montes 15085, SI). A. Plant. B. Leaf, adaxial surface. C. Detail of a cyme. D. Calyx.