Weinmannia

Bradford, Jason C., 2001, to the classification and identification of Weinmannia (Cunoniaceae) in Madagascar and the Comoro Islands, Adansonia (3) 23 (2), pp. 237-246 : 244

Key to sections and species-groups of Malagasy Weinmannia

1. Pedicels distinct, easily visible and slender; seeds with surfaces more or less evenly covered with trichomes .... .......................................................................................................................................... 2, sect. Inspersa

1’. Pedicels lacking, very short, or thick as if an extension of the receptacle; seeds usually comose at ends only, sometimes more or less covered with trichomes throughout ................................................ 5, sect. Spicata

2. Flowers positioned away from the floral bract at maturity; IMs equal in size; racemes borne in pairs from a short internode with a vegetative bud between them ................................................................................ 3

2’. Flowers positioned in the axil of the floral bract at maturity; IMs larger basally; racemes borne in threes or at the ends of a decussate branching system with multiple internodes that usually terminate in a raceme, or racemes in pairs with a vegetative bud between them ................................................................................ 4

3. Floral bracts subtending groups of flowers ........................................................................ species-group A

3’. Floral bracts subtending solitary flowers ............................................................................ species-group B

4. IM unbranched; floral bracts subtending solitary flowers or less often groups of flowers .... species-group C

4’. IM branched; floral bracts subtending groups of flowers .................................................. species-group D

5. Spikes borne solitarily in leaf axils; floral nectary composed of more or less distinct segments; flowers distributed near each other and the floral bract, borne in clusters of usually four ........................ species-group E

5’. Spikes borne in pairs from a short internode in leaf axils or terminally; floral nectary usually an entire, membranous disc (rarely segmented); flowers not distributed in clusters, but spread in a line away from the floral bract ................................................................................................................................................ 6

6. Floral bracts subtending multiple flowers; floral nectary sometimes easily broken into segments .................. .......................................................................................................................................... species-group F

6’. Floral bracts subtend a single flower; nectary usually entire and membranous .................... species-group G