A new species of Dillenia (Angiosperms: Dilleniaceae) from the Eastern Ghats of Andhra Pradesh, India

Swamy, Jetti; Rasingam, L.; Nagaraju, S.; Mane, Pooja R.

doi:10.11609/jott.5529.12.11.16636-16640

Cited by 1 publication

(4 citation statements)

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“…For example, Harley (1991) noted that pollen morphology in the Sapotaceae could differ even within species. In this family, the pollens of most genera did not have a consistent number of apertures, with TA B L E 1 Observations of staminodes, anther openings, stamen length and colour by Hoogland (1952Hoogland ( , 1959 for 58 Dillenia species (see Appendix 1) plus D. tirupatiensis (Swamy et al, 2020). White and cream colour 2 11…”

Section: Pollen Heteromorphymentioning

confidence: 93%

“…We added to the list of species D. tirupatiensis , which was treated by Swamy et al. (2020) similarly to species in Hoogland (1952). We recorded the following traits: (1) ‘corolla falling as a whole without spreading’, unknown, or not noted as being either of those two options by Hoogland (1952, 1959), and for simplicity noted here as ‘corolla opening’, (2) petal colour, (3) presence or absence of staminodes, (4) stamen and staminode arrangement (categorised as stamens about the same length, stamens in two groups, stamens longer in the centre, and stamens shorter in the centre) and (5) position of the anther pore or slit.…”

Section: Methodsmentioning

confidence: 99%

“…Dillenia species likely to be pollinated by bats based on description by Hoogland (1952Hoogland ( -indicated as 1952 , 1959 -indicated as 1959 ) of petals 'falling as a whole without spreading' (not shaded), with corolla behaviour unknown (light grey) and with corollas not indicated to be unknown or possibly falling as a whole by Hoogland (dark grey). Dillenia tirupatiensis is from Swamy et al (2020).…”

Section: A Ppen D I Xmentioning

confidence: 99%

“…Other corollas were recorded as apetalous, had unknown behaviour, or were not specifically mentioned and we presumed they opened ('the corolla [of Dillenia] usually consists of 5 free petals, which fall off within half a day after the flower has opened ' Hoogland (1952, p. 12)). We added to the list of species D. tirupatiensis, which was treated by Swamy et al (2020) similarly to species in Hoogland (1952). We recorded the following traits: (1) 'corolla falling as a whole without spreading', unknown, or not noted as being either of those two options by Hoogland (1952Hoogland ( , 1959, and for simplicity noted here as 'corolla opening', (2) petal colour, (3) presence or absence of staminodes, (4) stamen and staminode arrangement (categorised as stamens about the same length, stamens in two groups, stamens longer in the centre, and stamens shorter in the centre) and ( 5) position of the anther pore or slit.…”

Section: Dillenia Spp Flower Attributes and Bat Rangesmentioning

confidence: 99%

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Dillenia (Dilleniaceae) pollen heteromorphy and presentation, and implications for pollination by bats

Petit,

Scanlon,

Naikatini

et al. 2024

Ecology and Evolution

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Bat pollination of Dillenia in Fiji, a genus that was presumed to be pollinated by bees, posits that other Dillenia species may be bat‐pollinated, with implications for conservation and the understanding of angiosperm evolution. Botanical descriptions of some corolla behaviours (‘falling as a whole’) suggest bat removal of permanently closed corollas, as in D. biflora. Considering the remoteness of species of interest, we reviewed some Dillenia floral traits to hypothesise what they may mean for bat pollination of the genus. We investigated D. biflora pollen grains apertures and reviewed Dillenia literature concerning corolla behaviour and colour, and pollen apertures and presentation, including pores and staminodes. Our samples had dramatically different ratios of tricolpate to tetracolpate pollen grains, a trait that does not exclude pollination by bees. Petal colour polymorphism occurs, with mixed colours proportionately less common in flowers with corollas that open. The proportion of species with staminodes did not differ between those presumed to be pollinated by bats and others, but anthers of the former were significantly more likely to have apical pores, and stamens all had similar length or were slightly longer in the middle, whereas stamens in two distinct groups occurred in 55% of bee‐pollinated species. Pollen heteromorphy may facilitate pollination by different taxa in tropical environments. However, anther apical pores and stamen uniformity are more likely to be associated with bat‐pollinated species than are other morphologies. Dillenia could be a useful model to examine evolutionary aspects of colour, heteranthery, staminodes and pollen heteromorphy. Only field work will verify bat pollination and the implications of bat dependence for Dillenia species.

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Section: Pollen Heteromorphymentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: A Ppen D I Xmentioning

confidence: 99%

Section: Dillenia Spp Flower Attributes and Bat Rangesmentioning

confidence: 99%

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