Figure 118d - Euthamia caroliniana (digital photographs taken by Nathan Howell [capitulescence] and Alexander Krings [leaves]; illustration from Britton and Brown 1913) Capitulescenc
Figure 107d - Centella asiatica (digital photographs taken by Nathan Howell; illustration f...
Figure 172a - Nymphoides aquatica (digital photographs taken by Nathan Howell; illustration...
Figure 173d - Morella cerifera (digital photographs taken by Nathan Howell; illustration fr...
Figure 118c - Euthamia caroliniana (digital photographs taken by Nathan Howell [capitulesce...
Figure 118a - Euthamia caroliniana (digital photographs taken by Nathan Howell [capitulesce...
Figure 117d - Eupatorium mohrii × paludicola (digital photographs taken by Nathan Howell) ...
Figure 116d - Eupatorium capillifolium (digital photographs taken by Nathan Howell; illustr...
Figure 121d - Mikania scandens (digital photographs taken by Nathan Howell; illustration fr...
Figure 123b - Sclerolepis uniflora (digital photographs taken by Nathan Howell; illustratio...
Figure 122d - Pluchea baccharis (digital photographs taken by Nathan Howell) ...
Figure 107b - Centella asiatica (digital photographs taken by Nathan Howell; illustration f...
Figure 117b - Eupatorium mohrii × paludicola (digital photographs taken by Nathan Howell) ...
Figure 210d - Hydrocotyle verticillata (digital photographs taken by Alexander Krings) ...
Figure 137d - Eubotrys racemosa (digital photographs taken by Nathan Howell; illustration f...
Figure 104d - Alternanthera philoxeroides (digital photographs taken by Nathan Howell [habi...
Figure 107d - Centella asiatica (digital photographs taken by Nathan Howell; illustration f...
Figure 172a - Nymphoides aquatica (digital photographs taken by Nathan Howell; illustration...
Figure 173d - Morella cerifera (digital photographs taken by Nathan Howell; illustration fr...
Figure 118c - Euthamia caroliniana (digital photographs taken by Nathan Howell [capitulesce...
Figure 118a - Euthamia caroliniana (digital photographs taken by Nathan Howell [capitulesce...
Figure 117d - Eupatorium mohrii × paludicola (digital photographs taken by Nathan Howell) ...
Figure 116d - Eupatorium capillifolium (digital photographs taken by Nathan Howell; illustr...
Figure 121d - Mikania scandens (digital photographs taken by Nathan Howell; illustration fr...
Figure 123b - Sclerolepis uniflora (digital photographs taken by Nathan Howell; illustratio...
Figure 122d - Pluchea baccharis (digital photographs taken by Nathan Howell) ...
Figure 107b - Centella asiatica (digital photographs taken by Nathan Howell; illustration f...
Figure 117b - Eupatorium mohrii × paludicola (digital photographs taken by Nathan Howell) ...
Figure 210d - Hydrocotyle verticillata (digital photographs taken by Alexander Krings) ...
Figure 137d - Eubotrys racemosa (digital photographs taken by Nathan Howell; illustration f...
Figure 104d - Alternanthera philoxeroides (digital photographs taken by Nathan Howell [habi...
Figure 107d - Centella asiatica (digital photographs taken by Nathan Howell; illustration f...
Figure 172a - Nymphoides aquatica (digital photographs taken by Nathan Howell; illustration...
Figure 173d - Morella cerifera (digital photographs taken by Nathan Howell; illustration fr...