Cantinoa Harley & Pastore (2012: 8)

O’Leary, Nataly, 2015, Synopsis of subtribe Hyptidinae (Lamiaceae) in Argentina, Phytotaxa 233 (3), pp. 201-235 : 203

1. Cantinoa Harley & Pastore (2012: 8)

≡ Hyptis sect. Polydesmia Bentham (1833: 114) . Type:— Cantinoa carpinifolia (Pohl ex Bentham 1833: 115) Harley & Pastore (2012: 9) [= Hyptis carpinifolia Pohl ex Benth. ].

= Hyptis sect. Spicaria Bentham (1833: 78) ≡ Hyptis sect. Mesosphaeria subsect. Spicaria (Benth.) Epling (1933: 96) . Type (lectotype designated by Epling 1936: 244):— Hyptis spicigera Lamarck 1789 (185) [= Cantinoa americana ( Aublet 1775: 623) Harley & Pastore (2012: 9) ].

= Hyptis sect. Polydesmia subsect. Rigidae Bentham (1848: 116) . Type (lectotype designated by Epling 1936: 254):— Hyptis carpinifolia Bentham (1833: 115) [= Cantinoa carpinifolia (Benth.) Harley & Pastore ].

= Hyptis sect. Polydesmia subsect. Vulgares Bentham (1848: 120) . Type (lectotype designated by Epling 1936: 259):— Hyptis mutabilis ( Richard 1792: 110) Briquet (1896: 788) [= Cantinoa mutabilis (Rich.) Harley & Pastore (2012: 10) ].

= Hyptis sect. Mesosphaeria subsect. Plectranthodon Epling (1936: 237) . Type:— Hyptis plectranthoides Bentham 1833 (122) [= Cantinoa plectranthoides (Benth.) Harley & Pastore (2012: 11) ].

= Hyptis sect. Polydesmia subsect. Malvastra Epling (1936: 254) . Type (lectotype designated by Epling 1936: 255):— Hyptis vestita Pohl ex Bentham (1833: 114) [= Cantinoa althaeifolia (Pohl ex Benth.) Harley & Pastore (2012: 9) ].

Herbs or sub-shrubs. Leaves sessile or petiolate, variously pubescent, with or without glandular hairs or dendroid hairs. Flowers sessile, arranged in 12–26 flowered cymes, bracteoles forming a conspicuous involucre. Cymes set in elongated or branched panicles, branches erect or constituting elongated pseudo-spikes. Calyx slightly acrescent in fructification, mostly 10-nerved, campanulate or funnel-shaped, faintly bilabiate, with 5 subulate, stiff teeth. Corolla white or pale blue or blue color, bilabiate, tube cylindrical, superior lip erect, slightly bilobed, inferior lip reflex, trilobed, the central lobe cupped. Stamens exserted from tube, stigmatic branches sub-equal. Nutlets ellipsoid, smooth.

This genus is composed of 23 species, distributed from SE the United States of America, to Argentina, with two amply distributed species introduced in the Old World. In Argentina there are three native species.