Plant Image Collection

Population BiologyActions


abot83-7 Quick view

Concentric rings of seed traps around individual parent plants of Lepidium campestre (Brassicaceae) used to document the distance and directional components of an individual's seed dispersion pattern in the absence of vegetation.

abot83-8 Quick view

The federally endangered green pitcher plant (Sarracenia oreophila Sarraceniaceae) in flower. Thirty-five populations of this insectivorous perennial species remain in the southeastern U.S. Allozyme diversity is low in this species; small populations and geographically disjunct populations maintain the least genetic diversity.

abot85-4 Quick view

Brighamia rockii (Campanulaceae) in full flower at ka'aloa Peak, Moloka'i, Hawaii. Both members of this endemic Hawaiian genus, B. rockii rom Moloka'i and its sister species B. insignis from Kaua'i and Ni'ihau, are federally endangered.

abot86-4 Quick view

Leptonycteris curasoae visiting flowers of Stenocereus stellatus in a wild population in Zapotitlán de las Salinas, Tehuacán Valley, Mexico.

abot88-2 Quick view

The sunflower species Helianthus anomalus from the Little Sahara Sand Dunes in Utah.

abot88-8 Quick view

A hover-fly transports pollinia among flowers of Epipactis helleborine (L.) Crantz in England. Dominantly wasp-mediated cross-pollination has generated genetic structures consistent with random mating in both European and introduced North American populations.

abot89-9 Quick view

A syrphid fly (Toxomerus spp.) visits a wild radish (Raphanus raphanistrum) flower. Syrphids are one of a variety of effective pollinators of wild radish, which also include bumble bees, honey bees, sweat bees, and cabbage butterflies. The strength of selection exerted by these pollinators and the heritability of floral traits in the field are lessened by a large degree of within-plant variation in these traits.

abot90-10 Quick view

The three most abundant Venezuelan columnar cacti, from left to right, Pilosocereus lanuginosus (Linnaeus) Byles & Rowley, Stenocereus griseus (Haworth) Buxbaum, and Cereus repandus (Linnaeus) Miller. These species depend strictly on nectar-feeding bats for their pollination. Bat-mediated gene dispersal confers high levels of genetic exchange among populations of the three species, a process that enhances levels of genetic diversity within their populations.

abot91-9 Quick view

A hawk moth (Basiothia schenki, Sphingidae) visiting the night-flowering Zaluzianskya natalensis (Scrophulariaceae; upper left) and a long-proboscid fly (Prosoeca ganglbauri, Nemestrinidae) visiting the day-flowering Z. microsiphon (lower right). These two plant species occur sympatrically on Mt. Gilboa, South Africa. Morphological and inter-simple sequence repeat (ISSR) data support the hypothesis that gene flow is occurring between these species despite their apparent ethological isolation.

abot92-5 Quick view

Fruit color polymorphisms are striking examples of intraspecific genetic variation in plants that can interact with animal associates such as seed dispersers. Diaspores of the Australian desert shrub Acacia ligulata (Fabaceae) are composed of a black seed (ca. 5 mm in length) surmounted by a colored, lipid-rich aril (ca. 2.5 mm). The three color morphs-red, orange, and yellow-are dispersed by both ants and birds.

abot92-10 Quick view

A coastal prairie and UNESCO Biosphere Reserve north of Lincoln City, Oregon, USA on the Pacific Ocean. The ungrazed promontory of the preserve supports a diverse flora and fauna, including rare and endemic species. Color-coded organza bags were used to retrieve inbred and outbred progeny from hand pollinations of the rare Silene douglasii var. oraria (inset) for reintroduction. Transplants of outbred progeny had higher survival over 5 years than the inbred progeny in this headland (foreground), and seedling establishment was lowest for the rare variety in natural and experimental plots. This case study will facilitate the design of larger scale attempts at successful reintroductions.

Other Collections

This collection is within

Previous, in Botany & Plant Science

Next, in Botany & Plant Science

All, in Botany & Plant Science

Creation and update

Created by admin on Oct 23, 2013
Last update
Updated by admin on Oct 23, 2013

Back to overview