ABSTRACT
On the basisl of herbarium, living and pickled material
the morphology and systematics of Psilocaulon N. E. Brown
sensu Ihlenfeldt ~ Bittrich is investigated. Thirteen species
{including one insufficiently known species) are recognized:
' P. articulatum, PI· bicorne, P. coriarium, P. dimorphum, P.
dinteri, P. foliosum, P. gessertianum, P. granulicaule, P.
junceum, P. leptafthron, P. parviflorum, P. sal.icornioides, P.
subnodosum. Species of Mesembryanthemum, Prenia, Brownanthus,
Aspazom~ and Apte~ia are used as outgroups in a cladistic
analysis of Psilobaulon. The monophyly of Psilocaulon is
demonstrated. Asia result P. rapaceum Jacq. is excluded and
transferred to caulipsolon Klak gen. nov. The position of
Psilocaulon and t~e monotyp1.'c genus Caulipsolon within the
subfamily Mesembryanthemoideae is discussed. However,
relationships of fsilocaulon and Caulipsolon to other genera
remain obscure, s~nce no synapomorphies were found to indicate
sister relationships. More sampling among outgroups and/or a
future molecular ~tudy may help to elucidate relationships
among the genera of the Mesembryanthemoideae. Geographical
distribution pattfrns for all species and the number of
species per half-degree grid square are given. It is
discussed how speties diversity and geographical distribution
in Psilocaulon coAtrasts with or corroborates existing ideas
of centres of divjrsity and distribution patterns in the
Mesembryanthema. Each species is described in detail. A
description of thi. genera Psilocaulon and Caulipsolon is given
and a key to the pecies is provided. Material examined is
cited and full syjonomy is given.
KLAK, C (2021). Systematics Of Psilocaulon N. E. Br. (Aizoaceae). Afribary. Retrieved from https://tracking.afribary.com/works/systematics-of-psilocaulon-n-e-br-aizoaceae
KLAK, CORNELIA "Systematics Of Psilocaulon N. E. Br. (Aizoaceae)" Afribary. Afribary, 15 May. 2021, https://tracking.afribary.com/works/systematics-of-psilocaulon-n-e-br-aizoaceae. Accessed 22 Nov. 2024.
KLAK, CORNELIA . "Systematics Of Psilocaulon N. E. Br. (Aizoaceae)". Afribary, Afribary, 15 May. 2021. Web. 22 Nov. 2024. < https://tracking.afribary.com/works/systematics-of-psilocaulon-n-e-br-aizoaceae >.
KLAK, CORNELIA . "Systematics Of Psilocaulon N. E. Br. (Aizoaceae)" Afribary (2021). Accessed November 22, 2024. https://tracking.afribary.com/works/systematics-of-psilocaulon-n-e-br-aizoaceae