Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds
The seeds of all species of Justicia (except J. thymifolia (Nees) C.B. Cl.) and Siphonoglossa in the southern African region (as defined by the Flora of southern Africa) were examined with the Scanning Electron Microscope. A wide range of different seed surfaces were seen, many of which could be c...
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| Format: | Article |
| Language: | English |
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South African National Biodiversity Institut
1990-10-01
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| Series: | Bothalia: African Biodiversity & Conservation |
| Subjects: | |
| Online Access: | https://abcjournal.org/index.php/abc/article/view/893 |
| _version_ | 1828415813508399104 |
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| author | K. L. Immelman |
| author_facet | K. L. Immelman |
| author_sort | K. L. Immelman |
| collection | DOAJ |
| description | The seeds of all species of Justicia (except J. thymifolia (Nees) C.B. Cl.) and Siphonoglossa in the southern African region
(as defined by the Flora of southern Africa) were examined with the Scanning Electron Microscope. A wide range of different
seed surfaces were seen, many of which could be correlated with other characters to further reinforce grouping of species
into sections. However, some species that on other characters, would be placed together, had widely differing seed testas.
Gross surface morphology varied from smooth to colliculate, irregularly rugose, reticulate with the ridges variously arranged,
wheel-shaped (radiate or ammonite-like), with a central ridge or with multicellular barbed scales. The seeds were without
hairs, unlike some American species sometimes considered to belong in Justicia (Graham 1989). Micromorphology also
provided useful characters, with seeds being reticulate, papillate, minutely or deeply rugose or with one to many crystals
visible. Critical-point drying was sometimes helpful in viewing microstructure. |
| first_indexed | 2024-12-10T13:53:04Z |
| format | Article |
| id | doaj.art-43c7835c11204bb1a33b4e6180c856d7 |
| institution | Directory Open Access Journal |
| issn | 0006-8241 2311-9284 |
| language | English |
| last_indexed | 2024-12-10T13:53:04Z |
| publishDate | 1990-10-01 |
| publisher | South African National Biodiversity Institut |
| record_format | Article |
| series | Bothalia: African Biodiversity & Conservation |
| spelling | doaj.art-43c7835c11204bb1a33b4e6180c856d72022-12-22T01:46:06ZengSouth African National Biodiversity InstitutBothalia: African Biodiversity & Conservation0006-82412311-92841990-10-01201495910.4102/abc.v20i1.893822Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seedsK. L. Immelman0National Botanical Institute/Department of Agricultural DevelopmentThe seeds of all species of Justicia (except J. thymifolia (Nees) C.B. Cl.) and Siphonoglossa in the southern African region (as defined by the Flora of southern Africa) were examined with the Scanning Electron Microscope. A wide range of different seed surfaces were seen, many of which could be correlated with other characters to further reinforce grouping of species into sections. However, some species that on other characters, would be placed together, had widely differing seed testas. Gross surface morphology varied from smooth to colliculate, irregularly rugose, reticulate with the ridges variously arranged, wheel-shaped (radiate or ammonite-like), with a central ridge or with multicellular barbed scales. The seeds were without hairs, unlike some American species sometimes considered to belong in Justicia (Graham 1989). Micromorphology also provided useful characters, with seeds being reticulate, papillate, minutely or deeply rugose or with one to many crystals visible. Critical-point drying was sometimes helpful in viewing microstructure.https://abcjournal.org/index.php/abc/article/view/893Acanthaceae<i>Justicia</i>seeds.<i>Siphonoglossa</i>South Africataxonomy |
| spellingShingle | K. L. Immelman Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds Bothalia: African Biodiversity & Conservation Acanthaceae <i>Justicia</i> seeds .<i>Siphonoglossa</i> South Africa taxonomy |
| title | Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds |
| title_full | Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds |
| title_fullStr | Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds |
| title_full_unstemmed | Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds |
| title_short | Studies in the southern African species of Justicia and Siphonoglossa (Acanthaceae): seeds |
| title_sort | studies in the southern african species of justicia and siphonoglossa acanthaceae seeds |
| topic | Acanthaceae <i>Justicia</i> seeds .<i>Siphonoglossa</i> South Africa taxonomy |
| url | https://abcjournal.org/index.php/abc/article/view/893 |
| work_keys_str_mv | AT klimmelman studiesinthesouthernafricanspeciesofjusticiaandsiphonoglossaacanthaceaeseeds |