Cannaceae| Canna indica| Taxonomy Practicals| Dr. Jayarama Reddy| St. Joseph's University| Bengaluru

Описание: Cannaceae, Canna indica, Taxonomy Practicals by Dr. Jayarama Reddy, St. Joseph's University, Bengaluru.
Canna indica is a Herbaceous shrub, up to 1.5m tall when grown in ground. Leaves light green, 25 - 50cm long, sheathed around main stem arising from underground rhizome. Rhizome thick and branching. Flowers bright red, sometimes with yellowish lip, 4.0 - 4.5cm long, produced in simple or branched spike inflorescences.
The Cannaceae consist of perennial herbs. The stems are rhizomatous and sympodial. The leaves are distichous [to spiral], sheathing, petiolate, simple, and penni-parallel-veined. The inflorescence is a bracteate thyrse consisting of a spike or raceme of 2-flowered cymes (or reduced to a raceme). Flowers are bisexual, asymmetric, and epigynous. The perianth is biseriate and homochlamydeous, 3+3, and apotepalous. Stamens are 1 fertile, (median posterior in position), the fertile stamen petaloid. Staminodes are 1–4 [5], large, petaloid, resembling the fertile stamen; the anther is laterally subapically positioned on the petaloid stamen, longitudinal in dehiscence, bisporangiate, and monothecal. The gynoecium is syncarpous, with an inferior ovary, 3 carpels (the median carpel anterior), and 3 locules; the style is terminal and laminar; placentation is axile; ovules are anatropous, bitegmic, ∞ per carpel. The fruit is a usually a capsule; seeds are exarillate, with a starch-rich endosperm and perisperm.
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