Notice historique et critique sur la sainte couronne d'épines de Notre-Seigneur Jésus-Christ et sur les autres instrumens de sa passion qui se conservant dans l'église métropolitaine de Paris.

Mode of access: Internet.

The ladies' flower-garden of ornamental annuals /

Spine title: Loudon, Ornamental Annuals.

The Northern passion.

Mode of access: Internet.

Public papers of Roswell P. Flower, Governor, 1892-[1894]

Mode of access: Internet.

The ruling passion : tales of nature and human nature /

A lover of music -- The reward of virtue -- A brave heart -- The gentle life -- A friend of justice -- The white blot -- A year of nobility -- The keeper of the light.

The dark flower,

Mode of access: Internet.

Man's unconscious passion,

Mode of access: Internet.

Flower guide; wild flowers east of the Rockies,

Mode of access: Internet.

The Ware collection of Blaschka glass flower models; a short description of their makers and their making,

Mode of access: Internet.

Flowers and flower lore /

Paged continuously: v. 1; 4 pl., xvi, 352 p.; v. 2: 1 p. l., [353]-704 p.

Canadian fruit, flower, and kitchen gardener, a guide in all matters relating to the cultivation of fruits, flowers and vegetables, and their value for cultivation in this climate.

Mode of access: Internet.

Sensitivity of Geraldton waxflower to ethylene-induced flower abscission is reduced at low temperature

Exposure to ethylene gas elicits flower abscission from cut stems of Geraldton waxflower (Chamelaucium uncinatum Schauer). Ethylene response rates in plants are mediated by temperature. At 20degreesC, flower abscission from waxflower 'Purple Pride' occurred upon 12 h exposure to I mu11(-1) ethylene. This ethylene treatment did not cause flower abscission at either 10 or 2degreesC. Moreover, flowers held at 2degreesC were insensitive to 48 h exposure to 1, 10 and 100 mu11(-1) ethylene. However, increasing the duration of treatment with I mu11(-1) ethylene at 10 and 2degreesC to 48 and 144 h, respectively, induced flower abscission. When flowers were held at 20degreesC in air without exogenous ethylene following continuous exposure to I mu11(-1) ethylene at 2degreesC, the duration required to elicit flower abscission was reduced from 144 to 72 It. Collectively, these responses show that maintaining harvested waxflower at low temperature (e.g. 2degreesC) is an effective means to minimise ethylene-mediated flower abscission.

Learning, odour preference and flower foraging in moths

Floral volatiles play a major role in plant-insect communication. We examined the influence of two volatiles, phenylacetaldehyde and a-pinene, on the innate and learnt foraging behaviour of the moth Helicoverpa armigera. In dual-choice wind tunnel tests, adult moths flew upwind towards both volatiles, with a preference for phenylacetaldehyde. When exposure to either of these volatiles was paired with a feeding stimulus (sucrose), all moths preferred the learnt odour in the preference test. This change in preference was not seen when moths were exposed to the odour without a feeding stimulus. The learnt preference for the odour was reduced when moths were left unfed for 24 h before the preference test. We tested whether moths could discriminate between flowers that differed in a single volatile component. Moths were trained to feed on flowers that were odour-enhanced using either phenylacetaldehyde or a-pinene. Choice tests were then carried out in an outdoor flight cage, using flowers enhanced with either volatile. Moths showed a significant preference for the flower type on which they were trained. Moths that were conditioned on flowers that were not odour-enhanced showed no preference for either of the odour-enhanced flower types. The results imply that moths may be discriminating among odour profiles of individual flowers from the same species. We discuss this behaviour within the context of nectar foraging in moths and odour signalling by flowering plants.