By Franklin S. Axelrod
Have you questioned the place a Puerto Rican plant grows, whilst it vegetation, the place it comes from? good, here's an annotated list of the vascular vegetation shortly chanced on turning out to be within the wild at the island of Puerto Rico that may be a useful relief to botanists, ecologists, foresters and anybody else attracted to the flowers of Puerto Rico. right here you will discover the distribution of vascular vegetation in the island supplied based on a unique scheme that comes with either vast physiographic components and particular geographical websites. those are either defined within the textual content and illustrated via 3 maps. additionally, you will locate beneficial details at the instances of flowering, fruiting, and spore creation for every plant and in addition references for every one to fresh monographs on Puerto Rican crops the place a fuller description of every could be found.
In the prior few years there were many adjustments within the names of person plant taxa (species, subspecies, and kinds) and within the alignment of plant households. those alterations are recorded during this paintings in the sort of approach that older clinical names in addition to Spanish universal names will be tracked to new accredited ones. considering there's a lot overlap of the Puerto Rican plant life with that of alternative Caribbean islands and components, those nomenclatural adjustments can also be of use to researchers operating in these areas.
This record covers 2909 taxa which are integrated in 1053 genera and 210 households. of those taxa 2335 (80.2%) are local and 574 (19.7%) are unique; of the local ones, 243 (10.4%) are endemic.
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Following a suggestion by Lam (1948), Ps. were compared with Psilophyta (perhaps prompted to some extent by the similarity in name) which is now generally rejected. Bierhorst (1968, 1973, 1977) emphasized similarity to ferns, especially Stromatopteris, which had not been previously considered. Fig. 4 A-F. Psilotaceae. A, B Psi/olum comp/anatum. 8); B Dehisced sporangium (x 12). C, D Tmesipteris tnmcata. 1). D Dehisced sporangium (x 12). E, F Tmesipteris sp. E Gametophyte (g) with young sporophyte (sp) (enlarged).
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A Systematic Vademecum to the Vascular Plants of Puerto Rico by Franklin S. Axelrod