Gallery

spikelet, pedicel, and internode

spikelet

achenes

achenes

A, fruit; B, longitudinal section of fruit showing embryo; C, transection of fruit; drawing by Lynda E. Chandler

fruits with persistent calyx

apex of fruit (above wings)

base of fruit (below wings)

fruits (top view) without persistent calyx, showing coiled embryo

fruits (bottom view) without persistent calyx, showing pericarp

A, fruit with persistent calyx and bracteoles; B, fruit with calyx and bracteoles removed; C, embryo in situ; D, transection of fruit; drawing by Lynda Chandler

Salvinia molesta; photo: © Barry A. Rice/The Nature Conservancy

Salvinia molesta; photo: © S. Navie

Salvinia molesta, eggbeater-shaped hairs; photo: © Barry A. Rice/The Nature Conservancy

Salvinia molesta, secondary habit; photo: © M. Julien

Salvinia molesta, tertiary habit; photo: © S. Navie

achenes without pappus

achenes without pappus

achenes with pappus; photo: © P. Busselen, Katholiekd Universiteit Leuven(www.kuleuven-kortrijk.be/bioweb)

achene surface, detail

apex showing stylar remains

apex showing stylar scar

achene without pappus

herbarium specimen

achene surface, detail

apex showing stylar remains

apex showing stylar scar

spikelets in ventral view showing lower glume and sterile lemma (top) and dorsal view showing upper glume and fertile lemma (bottom)

spikelets in dorsal view

florets in ventral view showing palea and margins of lemma

caryopses in dorsal view (left) and ventral view (right)

A, spikelet in ventral view; B, spikelet in dorsal view; C, floret in ventral view; D, floret in dorsal view; E. caryopsis in ventral view; F, caryopsis in dorsal view; drawing by Lynda E. Chandler