Gallery

Alectra arvensis seeds without testa envelope

Alectra aspera (Cham. & Schlecht.) L.O. Williams seeds

Alectra aspera seeds, detail

Alectra fluminensis (Vell.) Stearn. seeds

Alectra fluminensis seeds, detail

Alectra melampyroides (Rich) Kuntz. seeds

Alectra melampyroides seeds, detail

Alectra stricta Benth. A, seed; B, longitudinal section of seed showing embryo; C, transection of seed; drawing by Lynda E. Chandler

fruits

seeds

A, utricle with perianth; B, utricle; C, seed; D, longitudinal section of fruit showing embryo; E, transverse section of fruit showing embryo; drawing by Lynda E. Chandler

achene with hairs teased back to better reveal the fruit

achene with hairs and pappus scales removed

close-up of the ring of pappus scales

apex with scales still attached

apex with scales removed

attachment scar of a fruit with hairs still attached

attachment scar of a fruit where hairs have been removed

floral heads with the hairy achenes still attached; photo by Fred Hrusa: © 2001 CDFA

A, fruit; B, embryo in situ; C, transection of fruit; drawing by Lynda E. Chandler

seeds

ventral view (top) and lateral view (bottom) of seeds

dorsal view of seeds

surface detail of seed

A–B, seed in two views; C, longitudinal section of seed showing embryo; D, transection of seed; drawing by Lynda E. Chandler

capsule (dehisced, seeds released)

capsule (dehisced, seeds released)

spikelet (left), floret (middle), attached pair of florets (right)

ventral view of primary florets showing basal scars

dorsal view of primary floret bases

primary florets with apices broken off

secondary florets in ventral view