A revision of the Solanum elaeagnifolium clade (Elaeagnifolium clade; subgenus Leptostemonum, Solanaceae)

Figure 2. Flowers of members of the Elaeagnifolium clade. A Solanum elaeagnifolium, with divergent anthers of approximately equal size and shape (Argentina, Mendoza, Knapp et al. 10470) B Solanum homalospermum (Argentina, Catamarca, Chiarini et al. 505) C Solanum hindsianum (cultivated in Arizona) D Solanum houstonii, hermaphroditic flower and strongly curved buds (Mexico, Yucatan, Pena-Chocarro et al. 407) E Solanum houstonii, staminate flower (Mexico, Queretaro, Ochoterena et al. 976) F Solanum mortonii (cultivated in Cordoba; from Barboza et al. 644). Photographs A, D, E by S. Knapp; B, F by F. Chiarini; C by Eugene Sturla.

Figure 3. Fruits of members of the Elaeagnifolium clade. A Solanum elaeagnifolium, immature berries with green mottling (Argentina, Cordoba, Barboza et al. 3434) B Solanum elaeagnifolium, mature fruit with sticky tan seeds (Argentina, Cordoba, Barboza et al. 3435) C Solanum mortonii, immature fruit exerted from the calyx (Argentina, Catamarca, Barboza et al. 3439) D Solanum mortonii, mature fruit exerted from the calyx (Argentina, Catamarca, Barboza et al. 3438) E Solanum houstonii, immature fruit enclosed in accrescent calyx (Mexico, Queretero, Ochoterena et al. 976) F Solanum houstonii, mature fruit enclosed in accrescent calyx with black seeds (Mexico, Queretero, Ochoterena et al. 976). Photographs by S. Knapp.

Figure 4. Habitats of members of the Elaeagnifolium clade. A Solanum elaeagnifolium, old stems with persistent berries and young new stems from underground rhizomes (Argentina, Mendoza, Knapp et al. 10470) B Solanum houstonii on rocky slope (Mexico, Queretaro, Ochoterena et al. 976) C Solanum mortonii, plant dug up showing extensive underground stems (Argentina, Catamarca, Barboza et al. 3437) D Solanum mortonii, large population on rocky slopes (Argentina, Catamarca, Barboza et al. 3437). Photographs by S. Knapp

Figure 5. Solanum elaeagnifolium Cav. A Fruiting branch B Flower C Spread corolla D Dorsal view of stamen E Ventral view of stamen F Gynoecium G Glandular trichome from gynoecium H Fruit I Lepidote trichome from calyx, seen from above J Lepidote trichome from calyx, seen from the side K Seed L Transverse section of seed M Embryo. Drawn by Leonor Sanchez. Reproduced with permission from Flora Argentina (Chiarini 2013).

Figure 6. Distribution of S. elaeagnifolium.