Davilla, Vandelli, 1788

Silva, Marcos José Da & Santos, Igor Soares Dos, 2022, A remarkable new species of Davilla Vand. (Dilleniaceae, Dolicocarpoideae) from the Brazilian Savanna supported by morphological and anatomical data, Phytotaxa 560 (2), pp. 186-208 : 195

Key to Davilla species occurring in Goiás State, Brazil

1. Decumbent subshrubs; inflorescences without branching, or with only one basal branch ( Fig 2a–c ) .................... Davilla pygmaea

- Upright shrubs or lianas, inflorescences always branching................................................................................................................2

2. Flowers with 1 carpel .........................................................................................................................................................................3

- Flowers with 2 carpels........................................................................................................................................................................4

3. Leaves with tertiary veins lacunose on the abaxial surface; stamens 35–42............................................................ Davilla lacunosa

- Leaves with tertiary veins reticulate on the abaxial surface; stamens 52–78 ( Fig 6 a–d )............................................. Davilla nitida

4. Petioles with lateral extensions curved downwards; leaf blade glabrous on the adaxial surface and glabrous or glabrescent on the abaxial surface; flowers with glabrous inner sepals externally ( Fig 5 a–c ) ......................................................... Davilla grandiflora

- Petioles with flat lateral extensions; leaf blade hirsute or tomentose, rarely glabrescent on the adaxial surface, and tomentose on the abaxial surface; flowers with villous or sericeous inner sepals externally ( Fig 4 a–e ) ........................................ Davilla elliptica

Figures

FIGURE 2. Davilla pygmaea M. J. Silva. a habit. b detail of an inflorescence. c general aspect of the plant in frontal view, note the ascending leaves. Images a and b provided by Marcelo F. Simon, c, by M.J. Silva.

FIGURE 4. Davilla ellipticaA. St.-Hil. a flowering branch, note the reddish and sericeous young branches. b flower in frontal view. c bee Apis mellifera visiting the flower. d detail of flowers in frontal view, note the two free carpels. e open fruits, note the glossy black seeds with white arils. Photograph c provided by Carolyn E. Barnes Proença, the others by Maurício Mercadante.

FIGURE 5. Davilla grandiflora A. St.-Hil. & Tul. a habit. b fruiting branch and foliage. c. fruits. Photographs provided by Marcelo F. Simon.

FIGURE 6. Davilla nitida (Vahl) Kubitzki. a fertile branch, note the effuse and conspicuously ramified inflorescence. b flowering branch. c flower in frontal view. d fruiting branch. Photographs provided by Maurício Mercadante.