Unpublished Notes on the Species of Christianella—W. R. Anderson, June 2008

Christianella glandulifera (Cuatrec.) W. R. Anderson—Western Amazonia (Amazonas and Vaupés, Colombia; Amazonas, Venezuela; Amazonas, Brazil; and Loreto, Peru). Longer petioles 11–15 mm long; larger laminas 5–7.2 cm wide, initially sericeous with sessile straight hairs, soon glabrescent; bracts and bracteoles 3–7 mm long, the bracts caducous, the bracteoles persistent or deciduous in fruit, both with many long-stalked marginal glands; marginal glands of sepals long-stalked; samaras orbicular, the lateral wing continuous at base, cleft to nut at apex.

Christianella mesoamericana (W. R. Anderson) W. R. Anderson—Known only from four localities in Mexico (Chiapas), Guatemala (Retalhuleu), Costa Rica (Puntarenas), and Panama (Darién). Longer petioles 2–8 mm long; larger laminas 2.5–5 cm wide, initially sericeous with sessile straight hairs, soon glabrate; bracts and bracteoles 2.5–5 mm long, persistent or the bracts deciduous in fruit, with many long-stalked marginal glands; marginal glands of sepals long-stalked; lateral wing of samara butterfly-shaped, cleft to nut at base and apex.

Christianella multiglandulosa (Nied.) W. R. Anderson—Bolivia (Santa Cruz), Paraguay (Amambay, San Pedro), and southern Brazil (Rondônia, Mato Grosso, Mato Grosso do Sul, São Paulo, Minas Gerais, Goiás). Lamina densely and persistently tomentose, velutinous, or woolly, especially abaxially, the hairs stalked; peduncle and pedicel very deeply woolly or velutinous, 1–1.5 mm or more in diameter including vesture; hairs so dense on abaxial leaf surface as to make it difficult to distinguish the crosspiece of any given hair; bracteoles abaxially very densely spreading-woolly, adaxially tomentose, at least on the distal half; sepals abaxially deeply spreading-woolly; petals abaxially densely woolly; lateral wing of samara continuous at base, cleft to nut at apex.

Christianella paludicola (W. R. Anderson) W. R. Anderson—Brazil (Amazonas and Acre). Longer petioles 15–20 mm long; larger laminas 7.5–12.5 cm wide, initially sericeous with sessile straight hairs, soon nearly glabrate; bracts and bracteoles 2–3 mm long, persistent or irregularly deciduous in fruit, eglandular or with several tiny sessile or subsessile marginal glands; marginal glands of sepals sessile or subsessile; lateral wing of samara cleft to nut at base and apex.

Christianella surinamensis (Kosterm.) W. R. Anderson—Venezuela (Amazonas), Peru (Madre de Dios), Bolivia (Beni, Santa Cruz), Brazil (Rondônia, Pará, Amapá), Guyana, and Suriname. Lamina densely and persistently tomentose, velutinous, or woolly, especially abaxially, the hairs stalked; peduncle and pedicel densely tomentose or velutinous but only 0.4–0.7 mm in diameter including vesture; leaf hairs much less dense than in C. multiglandulosa, the crosspieces of individual hairs easily distinguished; bracteoles abaxially appressed-tomentose, adaxially glabrous or tomentose only at very apex; sepals abaxially appressed-tomentose or subsericeous; petals abaxially moderately appressed-tomentose; lateral wing of samara continuous at base, cleft to nut at apex.