Lamiaceae

Herman, P. P. J.; Retief, E.

doi:10.4102/abc.v32i1.469

Cited by 4 publications

(7 citation statements)

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“…until a complete morphological revision of the genus had been completed. Herman and Retief (2002) placed Kalaharia in Rotheca. The molecular data contradict this view in showing that Kalaharia is sister to Clerodendrum plus other associated genera (i.e., Tetraclea, Amasonia, Aegiphila, and Huxleya).…”

Section: Discussionmentioning

confidence: 99%

“…was incorporated into Clerodendrum as a monotypic subgenus by Thomas (1936), on the basis of the form of the four-locular ovary and the drupaceous fruit that divides into four one-seeded pyrenes. Since then the ranking of the taxon has been inconsistent, with Moldenke (1985) maintaining it as a genus, Cantino et al (1992) including it in Clerodendrum, Verdcourt (1992) giving it subgeneric status within Clerodendrum s.l., and Herman and Retief (2002) placing it in the genus Rotheca.…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic relationships between Clerodendrum (Lamiaceae) and other Ajugoid genera inferred from nuclear and chloroplast DNA sequence data

Steane

Kok

Olmstead

2004

Molecular Phylogenetics and Evolution

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phylogenetic relationships between Clerodendrum (Lamiaceae) and other Ajugoid genera inferred from nuclear and chloroplast DNA sequence data

Steane

Kok

Olmstead

2004

Molecular Phylogenetics and Evolution

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“…In Asteraceae family, the single inflorescence may contain six types of florets (Herman, 2000). For instance, in Neptunia pubescen, three types of florets exist; hermaphrodite, staminate and neutral (Tucker, 1988).…”

Section: Discussionmentioning

confidence: 99%

Comparative Ontogeny of Hermaphrodite and Pistillate Florets in Helianthus annuus L. (Asteraceae)

Çetinbaş¹,

Ünal²

2012

Not Sci Biol

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The inflorescence of Helianthus annuus L. has two types of flowers (or florets) on a single capitulum; central hermaphrodite disc florets and peripheral pistillate ray florets. In both florets, reproductive development starts with the conversion of apical meristem into floral meristem that will produce floral organ primordia. The only difference between hermaphrodite and pistillate florets in apical meristem stage is that apical meristem of the pistillate florets is not as apparent and curvaceous as apical meristem of the hermaphrodite florets. The differentiation of apical meristem into floral meristem is in the same progress in both florets. In hermaphrodite florets, flower organs; petals, stamens and carpels develop from floral meristem. Differentiation of five petal primordia takes place in the same way in both florets. Firstly filament and then anther differentiates in a stamen. Two carpel primordia appear below the stamen primordia in hermaphrodite florets. In following stages, carpel primordia are lengthened and formed inferior ovary, style, stigma respectively. In pistillate florets, flower organs; petals and carpels develop from floral meristem. They pass directly from the periant initiation to the start of carpel formation. Stamen primordia don’t appear and the further development of carpel primordia stops in a short time, as a result, stigma and style do not exist in pistillate florets. However, an inferior ovary with no ovule forms. In the capitulum of hermaphrodite florets, the development takes place in a centripetal manner; it starts firstly on the outermost whorl, and it proceeds towards inner whorl. However, this is not the case in pistillate florets.

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“…Dit is aan die bopunt van die kapsella vasgeheg en omring die basis van die kroonbuis. 2,3 Die pappus kan aan-of afwesig wees. Wanneer dit aanwesig is, kan dit uit hare (Felicia-soorte) ( figure 1, 4, 5 en 12) of skubbe (Arctotis-, Berkheya-, Haplocarpha-en Geigeria-soorte) (figuur 6) of albei (Chrysocoma-, Pegolettia-, Ursinia-, Calostephane-en Roseniasoorte) ( figure 13 en 14) bestaan.…”

Section: Pappus Of Vrugpluis Vormunclassified

The plant Family Asteraceae: 3. The fruit

Herman¹

2002

Suid-Afrikaanse Tydskr Natuurwetenskap Tegnol

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INLEIDINGSoos in die eerste artikel 1 beskryf, word die vrugte van die familie Asteraceae dopvruggies of kapsellas genoem. Daar word nou in meer besonderhede na die uitwendige bou van verskillende vruggies en na die pappus of vrugpluis gekyk. Die interessante aanpassings vir verspreiding sal ook kortliks behandel word. DOPVRUGGIE OF KAPSELLA OntwikkelingDie onderstandige vrugbeginsel van die Asteraceae bestaan uit twee vergroeide vrugblare en bevat 'n enkele vrugknop wat aan die basis van die vrugbeginsel vasgeheg is. Hieruit ontwikkel die eenhokkige, droë, nie-oopspringende kapsella met 'n enkele saad waarvan die saadhuid met die vrugwand vergroei is. 2, 3Grootte Die vruggies varieer van baie klein (minder as 0.5 mm in deursnee by Helichrysopsis septentrionale (Vatke Hilliard) tot redelik groot (tot ± 20 mm in deursnee by Dimorphotheca spectabilis Schltr). Die vruggies ontwikkel uit 'n hofie waar tot soveel as 100 of meer blommetjies teenwoordig kan wees. Die vruggies kan uit die lint-of buisblomme of albei ontwikkel, afhangende van die geslag van die verskillende blommetjies. spoelvormig of gerimpel (buitenste vruggies van Dimorphothecasoorte) (figuur 3) wees. Hulle kan glad, harig (Felicia) (figure 4 en 5) en/of klieragtig (Calostephane, Inezia, Printzia) wees. By sommige soorte kom daar 'n klossie lang hare aan die onderkant van die vruggie voor, soos by sommige Arctotis-, Ursinia-en Haplocarpha-soorte (figuur 6). Soms kom daar hare op die vruggies voor wat slymerig word wanneer hulle nat word. Sommige vruggies is met lang, syagtige hare bedek, byvoorbeeld die Eriocephalus-(kapokbosse), Tarchonanthus-(wildekanferbome), Arctotis-, Gazania-en Dicoma-soorte. Die vruggies kan grof wees, met groewe of riwwe op die oppervlak (soos die Osteospermum-, Senecio-en Gerbera-soorte) (figuur 7). Dikwels het die afgeplatte vruggies vlerke (soos die Dimorphotheca-, Chrysanthellum-, en sommige Cotula-, Cineraria-en Coreopsissoorte) ( figure 1 en 8). Die vruggies van Tripteris-soorte het drie vlerkies, soos die naam aandui (tri=3, pteron=vlerk) (figuur 9). Daar kan ook ander uitstulpings of uitgroeisels (Osteospermum) of dorinkies (Acanthospermum, Xanthium) (figuur 10) op die vruggies voorkom. In die geval van die geslag Chrysanthemoides (bietoubosse) is die vruggie eintlik 'n steenvrug, aangesien dit 'n vlesige omwindsel het. Daar kom ook dikwels vrugdimorfisme by verskillende soorte voor, deurdat twee verskillende soorte vrugte uit die lint-en buisblomme van een hofie ontwikkel, soos by Chrysanthellum-soorte (figuur 11). 'n Ander baie bekende voorbeeld hiervan is die geslag Dimorphotheca -soos die naam aandui, is daar twee tipes (di=twee, morpho=vorm, theca= omhulsel) vruggies ( figure 3 en 8). In hierdie geval is die vruggies van die lintblomme onopvallend en tolvormig terwyl dié van die buisblomme gevleuel is. By sommige Cotula-en Cineraria-soorte is dit weer die vruggies van die buitenste vroulike blomme wat gevleuel is (figuur 1). Soms is die bopunt van die vruggie verleng om 'n lang nek te vorm, soos by Gerbera, Taraxa...

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Lamiaceae

Abstract: NEW COMBINATIONS IN THE GENUS ROTHECA IN SOUTHERN AFRICA

Cited by 4 publications

References 0 publications

Phylogenetic relationships between Clerodendrum (Lamiaceae) and other Ajugoid genera inferred from nuclear and chloroplast DNA sequence data

Phylogenetic relationships between Clerodendrum (Lamiaceae) and other Ajugoid genera inferred from nuclear and chloroplast DNA sequence data

Comparative Ontogeny of Hermaphrodite and Pistillate Florets in Helianthus annuus L. (Asteraceae)

The plant Family Asteraceae: 3. The fruit

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