Close-up photo of the terminal bud on a leafy shoot. The bud scales are glossy with resin.
Here’s another example of a resin sealant: the buds of Populus balsamifera (epithet = “fragrant resin-bearer”). Buds are protected by resin (see the gloss?), which is probably also a feeding deterrent for some critters. This is another photo from Matt Lavin CCBYSA2 #Salicaceae #resin #Botany
2/2
cottonwood #trees #Populus #Salicaceae time in #Kansas. The air is full of floating seeds with cottony hairs.
Salix phlebophylla, a dwarf willow, growing in Alaska.
Disentangling serial #chloroplast captures in #willows
New #AJB research by Diksha Gambhir, Brian Sanderson, Minghao Guo, Nan Hu, Ashmita Khanal, Quentin Cronk, Tao Ma, Jianquan Liu, Diana Percy & Matthew Olson
doi.org/10.1002/ajb2... #botany #plantscience #Salix #Salicaceae
A video about Pando! #Salicaceae
Photo of a leafy branch with several large, white showy flowers. Each flower has 5 petals, a single ring of many stamens, and an green stigma. An ant is foraging on one flower.
Unlike the temperate members of the family, many tropical species have showy flowers. Casearia dodecandra is a tropical Salicaceae from the Antilles. It’s in subfamily Samydoideae and lacks salicoid teeth. #Salicaceae #botany 🌾🧪🌱
Close-up photo of a leaf surface with two, trimerous flowers with many stamens. Several ants are investigating the flowers.
Phyllobotryon spathulatum has epiphyllous inflorescences, i.e. the flowers appear to be borne on the upper surface of the leaf blade, as shown in this photo by Bernard DUPONT (CCBYSA2). What are the ants up to? Probably stealing nectar. #Salicaceae #botany 🌾🧪
Close-up photo of the margin of a leaf. The marginal teeth are as described in the post.
The leaf margins of most #Salicaceae have salicoid teeth: Each tooth is vascularized & has a dark, spherical, non-deciduous callous at its tip. The exception is the early-diverging subfamily Samydoideae. They have the theoid tooth (an opaque, deciduous seta). 📷: Salix sp. #botany 🌾🧪🌱
Photo of a Chinese-themed garden. POV: looking across a pond to a pavilion alongside which is a weeping willow. The pavilion and willow are reflected in the pond.
Weeping willow is almost a waterside cliché, but its taxonomic identity is not always obvious. Some may be Salix babylonica (from e. Asia, nowhere near Babylon!); others may be a complex hybrid known as Salix × pendulina f. tristis. I don’t know how to tell them apart. #Salicaceae #botany 🌾🧪🌱
More Salicaceae for your delectation. Size differences in Salix. #Salicaceae #willow
Photo of a groundcover, rhizomatous shrub with simple leaves and spikes of capsules releasing fluffy seeds.
This week’s topic: Salicaceae. The boundaries of #Salicaceae have changed in recent decades. It is now recognized as a cosmopolitan family of woody, mostly dioecious plants. Salix arctica is a rhizomatous groundcover & one of the most northerly vascular plants. 📷 David Stanley CCBY2 #botany 🌾🧪🌱
The diversity of shrub willows in North America is illustrated by photographs of catkins of various species. The results of the study are summarized in a simplified phylogenetic tree on the upper left and two selected morphological characters on the bottom right.
Challenge accepted: Evolutionary lineages vs. taxonomic classification of North American shrub #willows (#Salix)
New #AJB research by Pia Marinček, Étienne Léveillé-Bourret, Ferris Heiduk, Jing Leong, Stéphane Bailleul, Martin Volf & Natascha Wagner
doi.org/10.1002/ajb2... #botany #Salicaceae
Photo of a leafy shoot bearing inflorescences that bear clusters of yellow stamen flowers.
#Salicaceae are a mixed family: some members have flowers with showy petals, but others, like this Azara serrata of Chile, are stamen flowers. #stamenflowers #stamen #Botany #PlantScience 🌾🧪🌱
