Hyptis sect. Eriosphaeria subsect. Pachyphyllae

Soares, Arthur De Souza, Pastore, José Floriano Barêa, Medeirosantar, Guilherme & Harley, Raymond Mervyn, 2021, Hyptis lavoisierifolia, a new species from the noteworthy Hyptis subsect. Pachyphyllae (Lamiaceae-Hyptidinae) endemic to Chapada dos Veadeiros region, Goiás, Brazil, Phytotaxa 507 (2), pp. 175-182 : 180

Key to Hyptis sect. Eriosphaeria subsect. Pachyphyllae species

1. Leaves with plane margin............................................................................................................................................. H. cruciformis

1’. Leaves with revolute margin ..............................................................................................................................................................2

2. Cymes 9.0–11.0 mm wide, 8–10-flowered.........................................................................................................................................3

2’ Cymes 5.0– 7.5 mm wide, 3–5-flowered ............................................................................................................................................4

3. Leaves linear-lanceolate; outer bracteoles slightly concave; calyx lobes 4.0– 4.5 mm long.................................. H. imbricatiformis

3’. Leaves ovate; outer bracteoles ovate, strongly concave; calyx lobes 1.5–2.5 mm long ............................................... H. penaeoides

4. Calyx at anthesis lanate, curled and white hairs; tube 2.0– 2.5 mm long, with lobes 3.0– 3.5 mm long; corolla with tube inner surface covered with long white hairs................................................................................................................................... H. lavoisierifolia

4’. Calyx at anthesis glabrous; tube 3.0– 3.5 mm long, with lobes 2.0– 2.5 mm long; corolla with tube inner surface glabrous.............. ..................................................................................................................................................................................... H. pachyphylla