Vegetative key to the families
Vegetative Key Vegetative key to the families
EPIPHYTES on trees or rocks
Leaves with parallel venation, or terete. Pseudobulbs and aerial roots with velamen often present (Fig. 41) Orchidaceae
Plants terrestrial with tubers or rhizomes. Leaves basal and/or cauline, large or scale-like
Autotrophs with green leaves and stems; stems sometimes coloured. Leaves sometimes absent at flowering time
Leaves 2 or more. Stem-bracts present or absent
Leaves 1 or none or leaves absent at flowering time. Stem-bracts present or absent