Category: H

Epiphytic for one stage of its life cycle but rooted in the soil during another stage. A primary hemi-epiphyte begins life as an epiphyte and later becomes rooted in soil, whereas a secondary hemi-epiphyte begins life rooted in soil and later becomes an epiphyte. A plant that is epiphytic during part of its life cycle…

(In Raunkiaer’s system) a plant with a growing point that survives adverse seasons as resting bud at or near the level of the soil, as in tussocks and rosettes.  

A type of carbohydrates in the cell wall. Polysaccharides resembling cellulose but more soluble and less complex. Found particularly in cell walls. Complex carbohydrates included as dietary fibre, composed of polyuronic acids combined with xylose, glucose, mannose, and arabinose. Found together with cellulose and lignin in plant cell walls; most gums and mucilages are hemicelluloses;…

Half-anatropous, the ovule axis at 90° to the stalk.  

Herb with basal parts in water or mud and upper parts aerial; (In Raunkiaer’s system) a plant with a growing point that survives adverse seasons as resting bud in marshy ground.  

Shaped like a helmet, i.e. hollow and vaulted (e.g. some orchid petals).