Text and photos are provided by Mr. Jim Conrad, see:
http://www.backyardnature.net/mexnat/acacia.htm
January 25, 2015 Newsletter issued from Río Lagartos, on the north-central coast of Yucatán, MÉXICO
Acacia californica ssp. pringlei is uncommon here, though other individuals have been seen, which were smaller and less spectacularly flowering than this one. What a bonanza this blossoming must be for pollinators beginning to feel the dry season's pinch as nowadays many flowering plants just dry up.
January 25th, 2015: along the road leading into Río Lagartos a broadly spreading tree was prettily abloom with snowy-white flowers
The tree is formed of several blotchy, whitish stems
This tree's leaves were twice-pinnately compound, but the leaflets were few in number and of a fair size
leaflets are shiny and hairless below, and notched at their tips with tiny mucro
The leaf's petiole is curiously channeled and segmented, with a conspicuous gland near the base
Short, sharp, woody "stipular spines" arise next to some buds, also giving another view of the gland on the petiole
The flowers were tiny ones densely packed in fuzzy, white spikes
from each flower arise many stamens -- more than ten -- and they're not united at their bases