Difference between revisions of "Hilliardiella"

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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 77108, https://species-id.net/w/index.php?title=Hilliardiella&oldid=77108 , contributors (alphabetical order): Pensoft Publishers.

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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 77108, https://species-id.net/w/index.php?title=Hilliardiella&oldid=77108 , 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 77108, https://species-id.net/w/index.php?title=Hilliardiella&oldid=77108 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/phytokeys.60.6734

Wikipedia/ Citizendium:

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| 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 77108, https://species-id.net/w/index.php?title=Hilliardiella&oldid=77108 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Asterales
Familia: Asteraceae

Name

Hilliardiella H. Rob., 1999 – Wikispecies link – Pensoft Profile

Descriptions

Herbaceous perennials to 1 m tall; stems pilose, hairs unequally T-shaped. Leaves alternate; blades abaxially often densely canescent pilose. Inflorescence laxly to subdensely corymbiform-cymose. Heads short-pedunculate; involucres campanulate, bracts 25–40, in ca. 3–4 series, persistent; receptacle epaleaceous. Florets 12–20 in a head; corollas purple, outside with few to many slightly contorted T-shaped hairs; basal tube funneliform above, throat short, lobes linear; anther thecae not or shortly appendaged at base; apical appendages glabrous, with thin walls; style with basal node; style branches with acicular sweeping hairs. Achenes 4–5-costate, densely setuliferous, setulae scarcely divided at tips, idioblasts numerous, raphids elongate, carpopodia narrowly cylindrical; pappus bristles white, barbate, tenuous, subpersistent, outer series shortly lanceolate. Chromosome number of n = 9, 10, most reports n = 10 (Turner and Lewis 1965[1]; Jones 1982[2]).
Pollen grains sublophate, with continuous perforated tectum between colpi, tricolporate to poles, echinate (Fig. 14 A–H). Notable secondary metabolites; acetones & sesquiterpene glaucolides/ hirsutanolides (Bohlmann and Jakupovic (1990[3], as Vernonia sutherlandii Harv., guaianolides, bisabolene derivatives (Bohlmann and Jakupovic 1990[3], as Vernonia hirsuta Sch. Bip. ex Walp. and Vernonia oligocephala (DC.) Sch. Bip. ex Walp.).

Taxon Treatment

  • 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

Figure 11. Photographs of Hilliardiella. A–B Hilliardiella aristata (DC.) H. Rob. C–D Hilliardiella flanaganii (E. Phillips) H. Rob. See Appendix C for citation details.
Figure 11. Photographs of Hilliardiella. A–B Hilliardiella aristata (DC.) H. Rob. C–D Hilliardiella flanaganii (E. Phillips) H. Rob. See Appendix C for citation details. 
Figure 12. Photographs of Hilliardiella oligocephala (DC.) H. Rob.: A Habit B Close up of head C Characteristic leaf D heads in fruit. Note: discolorous leaves are characteristic of some but not all species of Hilliardiella. See Appendix C for citation details.
Figure 12. Photographs of Hilliardiella oligocephala (DC.) H. Rob.: A Habit B Close up of head C Characteristic leaf D heads in fruit. Note: discolorous leaves are characteristic of some but not all species of Hilliardiella. See Appendix C for citation details. 
Figure 13. Illustrations Hilliardiella, Linzia, Parapolydora, and Vernonella: A Hilliardiella capensis (Houtt.) H. Rob., Skvarla & V.A. Funk B Linzia glabra Steetz in Peters, note: characteristic teeth on involucral bracts C Parapolydora gerrardii (Harv.) H. Rob D Vernonella africana Sond. See Appendix C for citation details.
Figure 13. Illustrations Hilliardiella, Linzia, Parapolydora, and Vernonella: A Hilliardiella capensis (Houtt.) H. Rob., Skvarla & V.A. Funk B Linzia glabra Steetz in Peters, note: characteristic teeth on involucral bracts C Parapolydora gerrardii (Harv.) H. Rob D Vernonella africana Sond. See Appendix C for citation details. 
Figure 14. Scanning electron micrographs of acetolyzed pollen from two collections of Hilliardiella capensis emphasizing spine variations. The surface seems to vary between sublophate and slightly echinolophate. A Polar view B Equatorial view C Lateral view D Polar view E Equatorial view F Subpolar view G Fragmented pollen surface H Grain fragment showing structural support of spine. (A–C Bayliss BS3686 D–H Gentry & Barolas 18914).
Figure 14. Scanning electron micrographs of acetolyzed pollen from two collections of Hilliardiella capensis emphasizing spine variations. The surface seems to vary between sublophate and slightly echinolophate. A Polar view B Equatorial view C Lateral view D Polar view E Equatorial view F Subpolar view G Fragmented pollen surface H Grain fragment showing structural support of spine. (A–C Bayliss BS3686 D–H Gentry & Barolas 18914). 

Other References

  1. ↑ Turner B, Lewis W (1965) Chromosome numbers in the Compositae: African species. Journal of South African Botany 31: 207–217.
  2. ↑ Jones S (1982) Pp. 126–127 In: Löve A (Ed.) IOPB Chromosome number reports LXXIV. Taxon 31: 119–128. http://www.jstor.org/stable/1219710?seq=1#page_scan_tab_contents
  3. ↑ 3.0 3.1 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
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