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12 results for “Collaea”
Linked collectors and determiners for: Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae.
Natural history specimen data linked to collectors and determiners held within, "Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/edc37b46-1879-4257-a2ea-8095e034e249">https://bionomia.net/dataset/edc37b46-1879-4257-a2ea-8095e034e249</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/edc37b46-1879-4257-a2ea-8095e034e249">https://gbif.org/dataset/edc37b46-1879-4257-a2ea-8095e034e249</a>. Formatted as a Frictionless Data package.
Data from: Floral antagonists counteract pollinator-mediated selection on attractiveness traits in the hummingbird-pollinated Collaea cipoensis (Fabaceae)
Pollinator-mediated selection towards larger and abundant flowers is common in naturally pollen-limited populations. However, floral antagonists may counteract this effect, maintaining smaller- and few-flowered individuals within populations. We quantified pollinator and antagonist visit rates and determined a multiplicative female fitness component from attacked and non-attacked flowers of the Brazilian hummingbird-pollinated shrub Collaea cipoensis to determine the selective effects of pollinators and floral antagonists on flower size and number. We predicted that floral antagonists reduce the female fitness component and thus exert negative selective pressures on flower size and number, counteracting the positive effects of pollinators. Pollinators, mainly hummingbirds, comprised 4% of total floral visitation, whereas antagonist ants and bees accounted for 90% of visitation. Nectar-robbers involved about 99% of floral antagonist visit rates, whereas florivores comprised the remaining 1%. Larger and abundant flowers increased both pollinator and antagonist visit rates and the female fitness component significantly decreased in flowers attacked by nectar-robbers and florivores in comparison to non-attacked flowers. We detected that pollinators favored larger- and many-flowered individuals, whereas floral antagonists exerted negative selection on flower size and number. This study confirms that floral antagonists reduce female plant fitness and this pattern directly exerts negative selective pressures on flower size and number, counteracting pollinator-mediated selection on floral attractiveness traits.
Data from: Floral antagonists counteract pollinator-mediated selection on attractiveness traits in the hummingbird-pollinated Collaea cipoensis (Fabaceae)
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FIGURE 8 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 8. Schemae of the leaves of Collaea. a. C. insignis, b. C. speciosa, and c. C. aschersoniana and C. stenophylla.
FIGURE 1. Collaea insignis M. J. Silva. a in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 1. Collaea insignis M. J. Silva. a. fertile branch; b. leave. c. detail of upper surface of the leaflet; d. detail of lower surface of leaflet; d. leaflet. e. floral bud; f. bract; g. bracteole; h. calyx opened out; i. detail of the central carenal lacinia; j. standard petal. k. base of the standard showing the claw, callosities and basal appendages; l. apex the standard; m. wing. n. keel petals; o. staminal tube. p. staminal tube opened out; q. anther in frontal view. r. anther in dorsal view. s. gynoecium. t detail of the stigma. u. fruit; v. fruit showing the valves elastically dehiscing; w. apex the fruit. x. seed, hilar view. y. seed, side view.
FIGURE 5 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 5. Cross-section of the leaflets blades and margin of Collaea aschersoniana (a–d), C. insignis (e–h), C. speciosa (i–l) and C. stenophylla (m–p): a, e, i and m general aspect of the leaf blades. b, f, j and n detail of the stomatal crypts in the adaxial surface. c, g, k and o detail of the epidermis, trichomes, vascular bundles, palisade and spongy parenchyma. d, h, l and p general aspect of the margin. (cr = stomatal crypts; ep = epidermis; fi = fibers; me = mesophyll; ph = phloem; pp = palisade parenchyma; sp = spongy parenchyma; tr = trichomes; vb = vascular bundle; xy = xylem; arrows = stomata). Scale: a, d, e, h, i, l, m, p = 200 μm; b, c, f, g, j, k, n, o = 50 μm.
FIGURE 7 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 7. Cross-section of the pulvinules of Collaea aschersoniana (a–d), C. insignis. (e–h), C. speciosa (i–l) and C. stenophylla (m–p), and petiole of C. speciosa (q–s): a, e, i, m and q general aspect. b, f, j and n general aspect of the adaxial surface, highlighting the crystals. c, g, k and o general aspects of the abaxial surface. d, h, l and p detail of the vascular bundle. r detail of the trichomes, epidermis, collenchyma, parenchyma, fibers, phloem and xylem. s detail of pith cells. (co = collenchyma; ep = epidermis; fi = fibers; pa = parenchyma; ph = phloem; pi = pith; tr = trichomes; vb = vascular bundle; xy = xylem; arrows = prismatic crystals). Scale: a, e, i, m, q = 200 μm; b–d, f–h, j–l, n–p, r, s = 50 μm.
FIGURE 9 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 9. Cross-section of the petiole (a–c) and pulvinus (d–k) of Collaea insignis (d–g) and C. speciosa (a–c, h–k): a, d and h general aspect. b detail of the trichomes, epidermis, collenchyma, parenchyma, fibers, phloem and xylem. c detail of pith cells. e and i detail of the adaxial surface. f and j detail of the abaxial surface. g and k detail of the vascular bundles highlighting the crystals. (co = collenchyma; ep = epidermis; fi = fibers; pa = parenchyma; ph = phloem; pi = pith; tr = trichomes; xy = xylem). Scale: a, d, h = 500 μm; b = 200 μm; c, e–g, i–k = 50 μm.
FIGURE 2. Collaea insignis M. J in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 2. Collaea insignis M. J. Silva (a and b): a. habit. b. fertile branch; Collaea speciosa (c–e): c. habit. D. foliage, note the leaves conspicuously petiolate. e. inflorescence. Photos a and b provided by Mauricio Mercadante, c and e by Rubens Queiroz.
FIGURE 6 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 6. Cross-section of the midribs of Collaea aschersoniana (a–d), C. insignis (e–h), C. speciosa (i–l) and C. stenophylla (m–p): a, e, i and m general aspect. b, f, j and n general aspect of the adaxial surface, highlighting the crystals. c, g, k and o general aspects of the abaxial surface. d, h, l and p detail of the vascular bundle. (co = collenchyma; cr = stomatal crypts; ep = epidermis; fi = fibers; pa = parenchyma; ph = phloem; pi = pith; tr = trichomes; vb = vascular bundle; xy = xylem; arrows = prismatic crystals). Scale: a, e, i, m = 200 μm; b–d, f–h, j–l, n–p = 50 μm.
FIGURE 3 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 3. Distribution map of Collaea insignis.
FIGURE 4 in Studies on Collaea species (Fabaceae) occurring in Brazil: taxonomic novelties, new interpretations about the leaf of the genus, and new leaf anatomical characters for American Fabaceae
FIGURE 4. Collaea aschersoniana (a–g1): a. calyx opened out. a1. detail of the central carenal lacinia of the calyx. b. standard; b1. base of the standard showing the claw, callosities and basal appendages; c. wing. d. keel petals; e. staminal tube. f. staminal tube opened out; f1. anther ventral view. f2. anther dorsal view; g. gynoecium; g1. detail of the stigma; C. speciosa (h–o1). h. calyx opened out. h1. detail of the central carenal lacinia of the calyx. i. standard; i1. base of the standard showing the claw, callosities and basal appendages; j. wing. k. keel petals; l. staminal tube. m. staminal tube opened out; n. anther ventral view. n1. anther dorsal view; o. gynoecium; o1. detail of the stigma; C. stenophylla (p–u1). p. calyx opened out. p1. detail of the central carenal lacinia of the calyx. q. standard; r. wing. s. keel petals; t. staminal tube. t1. anther ventral view. t2. anther dorsal view; u. gynoecium; u1. detail of the stigma.
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