Pseudopegolettia

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This page should be cited as follows (rationale):
Robinson H, Skvarla J, Funk V (2016) Vernonieae (Asteraceae) of southern Africa: A generic disposition of the species and a study of their pollen. PhytoKeys (60) : 49–126, doi. Versioned wiki page: 2016-02-11, version 77164, https://species-id.net/w/index.php?title=Pseudopegolettia&oldid=77164 , contributors (alphabetical order): Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Robinson2016PhytoKeys,
author = {Robinson, Harold AND Skvarla, John J. AND Funk, Vicki A.},
journal = {PhytoKeys},
publisher = {Pensoft Publishers},
title = {Vernonieae (Asteraceae) of southern Africa: A generic disposition of the species and a study of their pollen},
year = {2016},
volume = {},
issue = {60},
pages = {49--126},
doi = {10.3897/phytokeys.60.6734},
url = {http://phytokeys.pensoft.net/articles.php?id=6734},
note = {Versioned wiki page: 2016-02-11, version 77164, https://species-id.net/w/index.php?title=Pseudopegolettia&oldid=77164 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Vernonieae (Asteraceae) of southern Africa: A generic disposition of the species and a study of their pollen
A1 - Robinson H
A1 - Skvarla J
A1 - Funk V
Y1 - 2016
JF - PhytoKeys
JA -
VL -
IS - 60
UR - http://dx.doi.org/10.3897/phytokeys.60.6734
SP - 49
EP - 126
PB - Pensoft Publishers
M1 - Versioned wiki page: 2016-02-11, version 77164, https://species-id.net/w/index.php?title=Pseudopegolettia&oldid=77164 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/phytokeys.60.6734

Wikipedia/ Citizendium:

<ref name="Robinson2016PhytoKeys">{{Citation
| author = Robinson H, Skvarla J, Funk V
| title = Vernonieae (Asteraceae) of southern Africa: A generic disposition of the species and a study of their pollen
| journal = PhytoKeys
| year = 2016
| volume =
| issue = 60
| pages = 49--126
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/phytokeys.60.6734
| url = http://phytokeys.pensoft.net/articles.php?id=6734
| pmc =
| accessdate = 2024-12-23

}} Versioned wiki page: 2016-02-11, version 77164, https://species-id.net/w/index.php?title=Pseudopegolettia&oldid=77164 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Asterales
Familia: Asteraceae

Name

Pseudopegolettia H. Rob., Skvarla & V.A. Funk gen. nov.Wikispecies linkPensoft Profile

Type

Pegolettia tenella DC.

Descriptions

Small perennial herbs; stems erect, with short branchlets from lower nodes, puberulous to subsericeous with short-stalked hairs bearing asymmetric cap cells, stalks moderately broad with one or two septae, cap cells short and stout, attached near lower end. Leaves alternate, oblong to linear, essentially sessile, sparsely puberulous, abaxially densely glandular punctate. Inflorescence terminal with 1 or a few heads borne on long peduncles. Heads campanulate, 1.7–2.5 cm. wide; involucral bracts 20–60, in ca. three series, subequal, linear-lanceolate, herbaceous with slender tips, pilosulous outside; receptacle slightly convex, surface with angular thickenings. Florets 15 or more in a head; corollas purple, ca. 1 cm long, narrowly funnel-shaped from a slender base, throat slightly shorter than the moderately distorted, linear-lanceolate lobes, outer surface with short glands on tube and throat, spiculiferous distally on lobes; anther thecae narrowed at base to short lobulate tail; apical appendage glabrous, ovate with rather firm cell walls; style base with narrow annular node; sweeping hairs acicular, restricted mostly to style branches, few on upper shaft. Achenes mostly 6–8-ribbed, to 4.5 mm long, with glandular punctations and scattered idioblasts on sides, rarely without or with many short setulae that are not or scarcely split at apex, inner layer without raphids or with subquadrate raphids, with layer of rather sclerified narrow cells appearing as striations under the glands and idioblasts; carpopodium broadly stopper-shaped, sometimes with few short uniseriate hairs on inner surface; pappus of ca. 40 scabrid bristles, mostly in one series, as long as tube and throat of corolla, rather easily deciduous, scarcely narrowed except at tips, with few indistinct short bristles in outer series. Chromosome number unknown.
Pollen ca. 47 μm in diam., tricolporate, sublophate, echinate, with perforated tectum continuous between colpi (Fig. 24 A–H). Most notable secondary metabolites include sesquiterpene glaucolides (Bohlmann and Jakupovic 1990[1] as Vernonia monocephala Harv.) and 5-alkylcoumarins (Bohlmann and Jakupovic 1990[1] as Vernonia galpinii Klatt).
The genus consists of mostly monocephalous species, but those species have many individual differences such as the restriction of leaves to a basal rosette, capitula structure, and pubescence of the achenes. They do have essentially identical pollen, but it is a widely distributed pollen type in the Erlangeinae. There are no unique or uncommon characteristics that the two species share.

Original Description

  • Robinson, H; Skvarla, J; Funk, V; 2016: Vernonieae (Asteraceae) of southern Africa: A generic disposition of the species and a study of their pollen PhytoKeys, (60): 49-126. doi

Images

Other References

  1. 1.0 1.1 Bohlmann F, Jakupovic J (1990) Progress in the chemistry of the Vernonieae (Compositae). Plant Systematics and Evolution Suppl. 4: 3–43. doi: 10.1007/978-3-7091-6928-5_2