|
(Last Modified On 11/1/2012)
|
|
|
|
(Last Modified On 11/1/2012)
|
|
Genus
|
PONTEDERIA L.
|
|
PlaceOfPublication
|
Sp. P1. 288. 1753.
|
|
Synonym
|
Narukila Adans. Fam. 2:54. 1763. Unisema Raf. Med. Repos. II. 5:352. 1808.
|
|
Description
|
Perennial marsh or aquatic herbs. Leaves petioled, erect, blade narrow or broad. Inflorescence short or long-spicate, pedunculate, with basal spathe. Spadix and outer perianth more or less hairy, often glandular. Perianth bilabiate, lower 3 segments free, upper 3 adnate for their basal half, middle lobe expanded and with yellow spot. Stamens 6, unequal, posterior 3 included in the throat, fila- ments adnate toward their base. Ovary with 1 fertile cell containing a single anatropous ovule; style elongate, slender. Fruit achenoid, with persistent style and perianth parts and several protruding or ridge-like crests.
|
|
Key
|
a. Inflorescence about as broad or broader than long; many rod-shaped glands in hairs at base of the flowers, colorless and inconspicuous in living plants; spathe sub-ensheathing the inflorescence; fruit spiny, ap- pearing bur-like; plant suberect, prostrate-floating, or ascending - _ 1. P. ROTUNDIFOLIA aa. Inflorescence longer than broad; glands, if present, globular; inflores- cence usually well exserted from the spathe; fruit with longitudinal ridge-like crests; plant erect -2. P. CORDATA
|
|
Tag
|
|
|
|
Project Name
|
|
Tag
|
|
|
|