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61 results for “Ruellia”
Ruellia humilis (Acanthaceae) - inflorescence - whole - unspecified
Image of Ruellia humilis (Acanthaceae) - inflorescence - whole - unspecified
Ruellia humilis (Acanthaceae) - inflorescence - frontal view of flower
Image of Ruellia humilis (Acanthaceae) - inflorescence - frontal view of flower
Ruellia humilis (Acanthaceae) - whole plant - in flower - general view
Image of Ruellia humilis (Acanthaceae) - whole plant - in flower - general view
Ruellia humilis (Acanthaceae) - leaf - unspecified
Image of Ruellia humilis (Acanthaceae) - leaf - unspecified
FIGURE 3 in Ruellia umbrosa (Ruellieae, Acanthaceae) a new and critically endagered species from Lowlands of the Goiás state, Brazil
FIGURE 3. Distribution of Ruellia umbrosa M.J. Silva A. Map of Brazil, highlighting Goiás State in gray; B. Map of Goiás State, its limits, and altitudinal variations. C. Municipality of Niquelândia (dotted area) showing the species distribution points. Abbreviations for the states: BA, Bahia; GO, Goiás; MG, Minas Gerais; MS, Mato Grosso do Sul; MT, Mato Grosso; TO, Tocantins; and DF, Federal District of Brazil.
FIGURE 2. Ruellia umbrosa M.J. Silva A in Ruellia umbrosa (Ruellieae, Acanthaceae) a new and critically endagered species from Lowlands of the Goiás state, Brazil
FIGURE 2. Ruellia umbrosa M.J. Silva A. Habit, note the dark green leaves and calyx with equal lobes; B. Portion of the plant apex showing the paired flowers; C. Flower in frontal view, note the corolla whitish; D. Flower in frontal view, note the corolla slightly mauve; E. Capsules young, note the vinaceous color. Photographs by M.J. Silva from the holotype.
FIGURE 1. Ruellia umbrosa M.J. Silva. A in Ruellia umbrosa (Ruellieae, Acanthaceae) a new and critically endagered species from Lowlands of the Goiás state, Brazil
FIGURE 1. Ruellia umbrosa M.J. Silva. A. Habit; B. Cross section of the stem; C and D. Leaf shapes; E. Leaf base; F. Adaxial leaf surface showing the trichomes and aspect of margin; G. Abaxial leaf surface showing the trichomes; H. Flower bud; I. Flower in frontal view; J. Glandular trichomes in outer surface of the corolla; K. Calyx; L1. Inner surface of the calyx; L2. Glandular trichomes in outer surface of the calyx; M. Corolla opened outward; N. Portion of the androecium showing the point of union of the stamens. O. Trichomes of the filaments. P1. Anthers in frontal view. P2. Anthers in dorsal view. Q. Gynoecium; R. Trichomes of the styles. S. Detail of the stigma. T. Ovary and disk; U. Glandular trichomes at ovary apex; V1. Open capsule showing the seeds; V2. Apex the capsule showing the trichomes; X. Open capsule without seeds, schematic.; Z. Seed. (Drawings by Cristiano Gualberto, from the holotype).
FIGURE 4. Ruellia brevifolia A and B. A in Ruellia scarlatina, a new name for the sixty-year-old but misunderstood Ruellia capitata Rizzini (Acanthaceae)
FIGURE 4. Ruellia brevifolia A and B. A. Flowering branch, note the lax inflorescence; B. Flower, note the corolla ventricose. R. densa. C-D. C. Flowering branch, note the corolla tubular with lobes straight; D. Corolla in frontal view. Photographs by I. S. Santos.
FIGURE 2 in Ruellia scarlatina, a new name for the sixty-year-old but misunderstood Ruellia capitata Rizzini (Acanthaceae)
FIGURE 2. Distribution of Ruellia scarlatina M.J. Silva. A. Map of Brazil, highlighting the state of Goiás in gray; B. Map of Goiás state, its limits and altitude variation; C. Municipality of Niquelândia, (dotted area) with the species distribution points. Abbreviations for states (BA, Bahia; GO, Goiás; MG, Minas Gerais; MS, Mato Grosso do Sul; MT, Mato Grosso; TO, Tocantins) and Federation unity (DF, Distrito Federal) of Brazil.
FIGURE 1. Ruellia scarlatina M.J. Silva. A in Ruellia scarlatina, a new name for the sixty-year-old but misunderstood Ruellia capitata Rizzini (Acanthaceae)
FIGURE 1. Ruellia scarlatina M.J. Silva. A. Flowering branch; B. Bracts; C. Detail of the cystoliths on adaxial surface of the bracts; D. Detail of the trichomes on abaxial surface of the bracts; E. Bracteole; F. Detail of the trichomes in inner surface of the bracteole. G. Detail of the trichomes in outer surface of the bracteole; H.Calyx opened out, note the lobes with unequal size; I. Detail of the trichomes in inner surface of the calyx; J. Detail of the trichomes in outer surface of the calyx; K. Corolla opened out; L. Detail of the trichomes in inner surface of the corolla; M. Detail of the trichomes in outer surface of the corolla; N. Pair of stamens, note the filaments sparsely hirsuteglandular; O. Anthers, left in frontal view; right in dorsal view, note the trichomes on the connective; P. Gynoecium; Q.Ovary detail, note the glandular disk and trichomes; R. Stigma detail; S. Capsules; T. Open capsule; U. Seed; V. Trichomes onthe surface of the seed. (Drawn by Cristiano Gualberto from M. J. Silva & I. S. Santos 12860).
FIGURE 5. Ruellia elegans A and R. scarlatina B in Ruellia scarlatina, a new name for the sixty-year-old but misunderstood Ruellia capitata Rizzini (Acanthaceae)
FIGURE 5. Ruellia elegans A and R. scarlatina B. In A, note the membranaceous leaves and the inflorescence long pedunculate, in B, note the inflorescence compacted, similar toa head and the bracteoles elliptical with glandular trichomes. A. Photographs from iNaturalist website (iNaturalist.org), and B, by M. J. Silva.
FIGURE 3. Ruellia adenocalyx M.J. Silva. A–E. A in Ruellia scarlatina, a new name for the sixty-year-old but misunderstood Ruellia capitata Rizzini (Acanthaceae)
FIGURE 3. Ruellia adenocalyx M.J. Silva. A–E. A. Habit; B. Portion of the stem showing the phylotaxy; C. Detail of the inflorescence, note the bracts elliptical; D. Part of the inflorescence after the fall of the corolla, note the elliptical bracts with glandular trichomes; E. Flowers in lateral view, note the corolla lobes recurved. R. angustior F–H. F. Flowering branch, note the long inflorescence with spatulate bracts;G. Portion of the stem showing the phylotaxy and the appearance of axillary inflorescences, and H. Flowers in lateral view, note the corolla lobes recurved. Photographs by M. J. Silva.
FIGURE 1. Ruellia anamariae, A. habitat. b. bracteoles and flower. c. calyx glandular trichomes. d. corolla and stamens. e. corolla lobes. f. a in Ruellia anamariae, a new species of Acanthaceae from northern Brazil
FIGURE 1. Ruellia anamariae, A. habitat. b. bracteoles and flower. c. calyx glandular trichomes. d. corolla and stamens. e. corolla lobes. f. a pair of stamens. g. anther. h. gynoecium and disc. i. immature closed capsule. j. open capsule and seeds. k. pentagonal seed. L. suborbicular seed. Drawn by João Silveira based on A.S. Reis et al. 46 (MG), M.P.M. Lima et al. 37 (MG) and P. Cavalcante 2074 (MG).
FIGURE 2. Ruellia anamariae. A in Ruellia anamariae, a new species of Acanthaceae from northern Brazil
FIGURE 2. Ruellia anamariae. A. in its natural habitat; B. upper portion of the inflorescence; C. flower. D. immature fruit. B‒C. from the holotype, A.S. Reis et al. 46 (MG). (Photos A and D by Nara Mota; B and C by Climbiê Hall).
Data from: Effects of arbuscular mycorrhizal fungi on aboveground tri-trophic interactions are contingent upon plant genetic effects of cross type in the perennial herb Ruellia nudiflora
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Fig. 1 in A new name in Ruellia L. (Acanthaceae) for Madagascar
Fig. 1. – Detailed map of the Central Highlands including quartzite substrate in the region (grey) and proposed new protected areas (hatched); collections of Ruellia quartziticola Callm., E. Tripp & Phillipson (squares: Perrier de la Bâthie 12374 [P]; Morat 3139 [M]).
Reproductive character displacement and potential underlying drivers in a species-rich and florally diverse lineage of tropical angiosperms (Ruellia; Acanthaceae)
Reproductive character displacement is a pattern whereby sympatric lineages diverge more in reproductive character morphology than allopatric lineages. This pattern has been observed in many plant species, but comparably few have sought to disentangle underlying mechanisms. Here, in a diverse lineage of Neotropical plants (Ruellia; Acanthaceae), we present evidence of reproductive character displacement in a macroevolutionary framework (i.e., among species) and document mechanistic underpinnings. In a series of inter-specific hand pollinations in a controlled glasshouse environment, we found that crosses between species that differed more in overall flower size, particularly in style length, were significantly less likely to produce viable seeds. Further, species pairs that failed to set seed were more likely to have sympatric distributions in nature. Competition for pollinators and reinforcement to avoid costly inter-specific mating could both result in these patterns and are not mutually exclusive processes. Our results add to growing evidence that reproductive character displacement contributes to exceptional floral diversity of angiosperms.
Ruellia strepens (Acanthaceae) - leaf - margin of upper + lower surface
Image of Ruellia strepens (Acanthaceae) - leaf - margin of upper + lower surface
FIGURE 3 in Ruellia anamariae, a new species of Acanthaceae from northern Brazil
FIGURE 3. Distribution map of Ruellia anamariae.
Data from: Test of biotic and abiotic correlates of latitudinal variation in defences in the perennial herb Ruellia nudiflora
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