02 de abril de 2022

Tips when photographing Struthiola's

When taking photos of Struthiola's, there are a few simple things to keep in mind.

1) A clear photo of the flower

Struthiola's have a feature called floral scales that can be found around the centre of the flowers. These can vary greatly from species to species. Floral scales are always found in multiples of 4.

For example:
S. striata = 4 floral scales
S. myrsinites = 8 floral scales
S. argentea = 12 floral scales

With some species the floral scales can have hairs of various lengths. These hairs are called perigonal hairs. For example, S. argentea has no hairs on its floral scales whereas S. myrsinites have hairs on its floral scales that are longer than the scales itself. Sometimes the hypanthiums are also hairy (S. fasciata). The hypanthium is just a fancy term for the flower tube in layman's terms.

2) Clear photos of the leaves

The leaves between species also vary greatly from broad and hairy, to narrow and hairless. A clear photo of the leaves also helps to distinguish between some species.

3) A habit (how does the plant grow) shot

Different species of Struthiola grows differently. Here a wide (not too wide) shot helps see what shape and form the species is growing. Some can grow tall while others grow in small shrubs.

It sounds complicated, but it is actually very simple to photograph. Now you know what to look for. @shauns

Ingresado el 02 de abril de 2022 por erickmunro erickmunro | 2 observaciones | 0 comentarios | Deja un comentario

30 de agosto de 2021

Tips when photographing Leucadendron's

When photographing Leucadendron spp., it is important to have multiple angles for identification purposes. Having photos of the cones is great, but it will help significant to have more details. The sole purpose of this journal post is just to inform whoever might be interested and those who might not know.

1) Close-up of the cones (Both male and females if present).

Females form the familiar cones and males don't.

2) The base of the stem (Reseeder vs. Resprouter)

This is probably one of the most important details needed for a positive ID. This is not just true for Leucadendron's, but for other Proteaceae, Ericaceae, Cyclopia (Fabaceae) and many others. For example, Leucadendron conicum (Single-stemmed reseeder) vs. Leucadendron salignum (Multi-stemmed resprouter). The same for the Cyclopia's, C. subternata is a single-stemmed reseeder and C. intermedia is a multi-stemmed respouter. I will add a separate journal post on reseeders and respouters for interest sake.

3) Habit and Habitat Shot

It is also important to see the growth form and the habitat type in which the species grows. Some species occurs in specific environmental conditions. Example, P. venusta (EN) is found between 1700m - 2000m in altitude, on southern sandstone slopes (SANBI).

Credit to Tony Rebelo. This journal has been compiled through the tips and comments by Tony Rebelo.

Ingresado el 30 de agosto de 2021 por erickmunro erickmunro | 2 observaciones | 0 comentarios | Deja un comentario

13 de mayo de 2021

Otholobium stachyerum vs. Otholobium acuminatum

Otholobium acuminatum differs from O. stachyerum in its vestiture on branches comprised of yellowish hairs (vs. branches vestiture comprised of white to silvery hairs); leaves 7—10 mm long, scarcely petiolate (vs. 10—20 mm, petiolate), stalked; inflorescences transversely broadly elliptic to broadly ovate, comprised of 15 — 16 triplets of ebracteate flowers maturing more or less simultaneously (vs. 15 — 20 mm long, elongating during anthesis from 15 to 40 mm, each comprised of 20 — 25 triplets of bracteate flowers maturing sequentially and axis extending); flowers mauve to purple with purple nectar patch (vs. flowers rose-pink and white with reddish nectar patch on standard); calyx accrescent, glabrous except for a few short black hairs along the margins of the teeth (vs. calyx sericeous, white or black-haired carinal calyx tooth shaped like a minaret with as long curved to coiled tip extending beyond the flowers (vs. carinal calyx tooth 6.0 —6.5 mm long, and shorter than flowers.

From Charles Stirton

Ingresado el 13 de mayo de 2021 por erickmunro erickmunro | 0 comentarios | Deja un comentario

05 de mayo de 2021

Archivos