A new revision of the genus Pentatrichia Klatt is presented here. Morphological data
from previously described taxa: P. alata S.Moore, P. avasmontana Merxm., P.
petrosa Klatt and P. rehmii (Merxm.) Marxism. were subjected to both univariate and
multivariate statistical methods. Both herbarium material and voucher specimens
collected during fieldwork were examined. Morphological character data were
analysed by Unweighted Pair-group Method Arithmetic Average (UPGMA)
clustering algorithms as to obtain groupings as objectively as possible. Cluster
analyses revealed the existence of three species in the genus namely P. alata, P.
Pedrosa and P. rehmii. Pentatrichia avasmontana Merxm. is reduced to subspecific
level under P. rehmii (Merxm.) Merxm.; P. rehmii subsp. avasmontana (Merxm.)
Klaassen & Kwembeya comb.nov. Two ordination methods Principal Coordinate
Analysis (PCO) and Principal Component Analysis (PCA) were employed and
confirmed the results obtained from the cluster analyses.
The results revealed that P. avasmontana does not warrant specific status as it came
out nested within P. rehmii. Pentatrichia avasmontana is accordingly reduced to
subspecific level under P. rehmii. Leaf characters and presence/absence of ray florets
proved to be the most important characters in diagnosing species in the genus.
Photographs of some of the morphological characters are provided. This revision
includes a new key for the species, descriptions and distribution maps at the quarter
Field assessments of Namibian species facilitated comprehensive Red List
assessments of the genus in Namibia. Two taxa emerged as “Least Concern” with P.
rehmii subsp. rehmii falling in the “Vulnerable” (VUD1) category
Edu, F (2021). A Taxonomic Revision Of The Genus Pentatrichia (Asteraceae). Afribary.com: Retrieved May 13, 2021, from https://afribary.com/works/a-taxonomic-revision-of-the-genus-pentatrichia-asteraceae
Frontiers, Edu. "A Taxonomic Revision Of The Genus Pentatrichia (Asteraceae)" Afribary.com. Afribary.com, 25 Apr. 2021, https://afribary.com/works/a-taxonomic-revision-of-the-genus-pentatrichia-asteraceae . Accessed 13 May. 2021.
Frontiers, Edu. "A Taxonomic Revision Of The Genus Pentatrichia (Asteraceae)". Afribary.com, Afribary.com, 25 Apr. 2021. Web. 13 May. 2021. < https://afribary.com/works/a-taxonomic-revision-of-the-genus-pentatrichia-asteraceae >.
Frontiers, Edu. "A Taxonomic Revision Of The Genus Pentatrichia (Asteraceae)" Afribary.com (2021). Accessed May 13, 2021. https://afribary.com/works/a-taxonomic-revision-of-the-genus-pentatrichia-asteraceae