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11 results for “Calochortus”
Herbarium specimen image of Calochortus nuttallii Torr. & A.Gray, part of the collection of Meise Botanic Garden
Part of a training dataset of scanned herbarium specimens. The data paper and a summary landing page will be published on Zenodo as it gets published.<br><br>Content of this deposition:<br><br>- A JSON-LD datafile listing the label data associated with this herbarium specimen. The Darwin and Dublin Core data standards are used for most values.<br>- A JPEG image file of the scanned herbarium sheet.<br>- A lossless TIFF image from which the JPEG image has been derived.
Chromosomal evolution, environmental heterogeneity, and migration drive spatial patterns of species richness in Calochortus (Liliaceae)
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Data from: Spatial scales of genetic structure and gene flow in Calochortus albus (Liliaceae)
Calochortus (Liliaceae) displays high species richness, restriction of many individual taxa to narrow ranges, geographic coherence of individual clades, and parallel adaptive radiations in different regions. Here we test the first part of a hypothesis that all of these patterns may reflect gene flow at small geographic scales. We use amplified fragment length polymorphism variation to quantify the geographic scales of spatial genetic structure and apparent gene flow in Calochortus albus, a widespread member of the genus, at Henry Coe State Park in the Coast Ranges south of San Francisco Bay. Analyses of 254 mapped individuals spaced 0.001–14.4 km apart show a highly significant decline in genetic identity with ln distance, implying a root-mean-square distance of gene flow σ of 5–43 m. STRUCTURE analysis implies the existence of 2–4 clusters over the study area, with frequent reversals among clusters over short distances (<200 m) and a relatively high frequency of admixture within individuals at most sampling sites. While the intensity of spatial genetic structure in C. albus is weak, as measured by the Sp statistic, that appears to reflect low genetic identity of adjacent plants, which might reflect repeated colonizations at small spatial scales or density-dependent mortality of individual genotypes by natural enemies. Small spatial scales of gene flow and spatial genetic structure should permit, under a variety of conditions, genetic differentiation within species at such scales, setting the stage ultimately for speciation and adaptive radiation as such scales as well.
FIGURE 2. Calochortus ownbeyi and C. venustulus flower differences. A in Validation of Calochortus ownbeyi (Liliaceae), a new species from northwestern Mexico
FIGURE 2. Calochortus ownbeyi and C. venustulus flower differences. A. Calochortus ownbeyi type collection (García-Martínez et al. 274). B. Calochortus ownbeyi, coastal population (Rodríguez et al. 5935). C. Calochortus ownbeyi, inland population (Rodríguez et al. 5914). D. Calochortus venustulus habit (García-Martínez et al. 281). E. Calochortus venustulus (Rodríguez et al. 6156). F. Calochortus venustulus (Rodríguez & Castro-Castro 4567). Pictures: M.A. García-Martínez (A, D); A. Rodríguez (B, C, E, F).
FIGURE 1. Calochortus ownbeyi. A. Habit. B. Flower front view. C. Flower posterior view. D. Internal tepal. E in Validation of Calochortus ownbeyi (Liliaceae), a new species from northwestern Mexico
FIGURE 1. Calochortus ownbeyi. A. Habit. B. Flower front view. C. Flower posterior view. D. Internal tepal. E. External tepal. Illustrated by C. Rodríguez based on type material (García-Martínez et al. 274).
FIGURE 2. Calochortus occidentalis. A. Habit. B. Flower. C. Inner tepal. D. Outer tepal. E. Capsule. F in Calochortus occidentalis (Liliaceae), a new species from western Mexico
FIGURE 2. Calochortus occidentalis. A. Habit. B. Flower. C. Inner tepal. D. Outer tepal. E. Capsule. F. Seed. Illustrated by Cristina Rodríguez-Sosa based on type material (Rodríguez et al. 7794).
FIGURE 3. Tepal colour variation between Calochortus occidentalis and C. fuscus. A in Calochortus occidentalis (Liliaceae), a new species from western Mexico
FIGURE 3. Tepal colour variation between Calochortus occidentalis and C. fuscus. A. Calochortus occidentalis with trichomes strong red and brilliant yellow apically, extended to the mid surface (Rodríguez et al. 4943). B. Calochortus occidentalis type collection with dark red trichomes extended beyond the middle (Rodríguez et al. 7794). C. Calochortus occidentalis posterior view (Rodríguez et al. 5657). D. Calochortus fuscus reddish orange form (García-Martínez 334). E. Calochortus fuscus greenish yellow form (García-Martínez 330). F. Calochortus fuscus posterior view (García-Martínez 335).
FIGURE 1 in Calochortus occidentalis (Liliaceae), a new species from western Mexico
FIGURE 1. Type of Calochortus fuscus deposited at M. Reproduced with permission of the Botanische Staatssammlung München, Germany.
Data from: Spatial scales of genetic structure and gene flow in Calochortus albus (Liliaceae)
Open the record for dataset details and reuse information.
FIGURE 3 in Validation of Calochortus ownbeyi (Liliaceae), a new species from northwestern Mexico
FIGURE 3. Distribution of Calochortus ownbeyi and C. venustulus.
FIGURE 4 in Calochortus occidentalis (Liliaceae), a new species from western Mexico
FIGURE 4. Distributions of Calochortus occidentalis and C. fuscus.
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