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Morphological variation of Ribes cuneifolium bud scales. A-B. Bud scales with all the different glands (stalked with trichomes, minutely stalked and sessile) of Ribes cuneifolium (A Weigend et al. 7676; B Weigend & Schwarzer 8035). C-D. Bud scales of "Ribes incertum" with two types of glands (minutely stalked and sessile) (C Cano et al. 13715, D Cano et al. 13652). E. Bud scale of the specimens from San Martín with only one type of gland (sessile) (Quipuscoa & Vilchez 2614). F. Bud scale with only one type of gland (Cusco, Galiano et al. 6020).
Source publication
The genus Ribes (Grossulariaceae) is widespread across the northern hemisphere, but also species-rich in the tropical Andes. In the Peruvian Andes the genus is mostly found in at least seasonally moist cloud and scrub forests, subparamo habitats and hedges. However, some taxa are from more extreme habitats in semi-arid habitats of the western slope...
Contexts in source publication
Context 1
... genus (compare Weigend & Binder, 2001, Figs. 9, 10, 11). Both Ribes cuneifolium and Ribes ovalifolium have superficially similar leaves, atypically small for Ribes and with poorly developed -if any -lateral lobes, but the two species are easy to distinguish. Ribes ovalifolium has petioles up to 10 mm long with only long stalked trichome glands (Fig. 13), whereas petioles in R. cuneifolium are absent or very short (rarely up to 6 mm) with up to three different types of glands (sessile, minute stalked, long stalked). The lamina of R. ovalifolium (up to 26 × 23 mm) is larger than in R. cuneifolium (up to 15 × 12 mm). Moreover, R. ovalifolium has leaves with a central lobe slightly longer ...
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... with the lateral lobes -if present -in the distal half of the lamina (Figs. 4-5). The microphyllous leaves are 3-15(-20) mm long and 3-9(-12) mm wide and range from subsessile to shortly petiolate, the lamina is flabellate, obovate, or sub-elliptical (Fig. 4). Bud scales are narrowly to widely ovate, and the apex narrowly acute or acuminate (Fig. 1). There is some degree of variability between different ...
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... minutely stalked, and distinctly stalked glands are present ( Fig. 2-3), all three types or only one or two of them may be present in any given individual, with no indication of a clear geographical pattern or correlation with, e.g., leaf morphology. Some specimens differ marginally from the typical condition, e.g., those from San Martín (Tab. 1; Fig. 1E, 2D), Cuzco (Tab. 1; Fig. 1F, 2E), and what has been described as "Ribes incertum" (Tab. 1; Fig. 1C, D, 2C). Despite obvious differences in details of leaf morphology or trichome types, we failed to identify any clear dividing lines between groups of populations. Macbride (1930) described the segregate species Ribes incertum J.F. Macbr. ...
Context 4
... stalked glands are present ( Fig. 2-3), all three types or only one or two of them may be present in any given individual, with no indication of a clear geographical pattern or correlation with, e.g., leaf morphology. Some specimens differ marginally from the typical condition, e.g., those from San Martín (Tab. 1; Fig. 1E, 2D), Cuzco (Tab. 1; Fig. 1F, 2E), and what has been described as "Ribes incertum" (Tab. 1; Fig. 1C, D, 2C). Despite obvious differences in details of leaf morphology or trichome types, we failed to identify any clear dividing lines between groups of populations. Macbride (1930) described the segregate species Ribes incertum J.F. Macbr. from the Cordillera Blanca in ...
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... or two of them may be present in any given individual, with no indication of a clear geographical pattern or correlation with, e.g., leaf morphology. Some specimens differ marginally from the typical condition, e.g., those from San Martín (Tab. 1; Fig. 1E, 2D), Cuzco (Tab. 1; Fig. 1F, 2E), and what has been described as "Ribes incertum" (Tab. 1; Fig. 1C, D, 2C). Despite obvious differences in details of leaf morphology or trichome types, we failed to identify any clear dividing lines between groups of populations. Macbride (1930) described the segregate species Ribes incertum J.F. Macbr. from the Cordillera Blanca in Ancash. Our copious collections from the Cordillera Blanca showed no ...
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... -poorly differentiated -collections in Fig. 7: All over, there is neither morphological nor ecogeographical evidence (Fig. 7) to support the recognition of separate taxa in R. cuneifolium or maintaining the segregate R. incertum.The only clear exception are the low-elevation collections from Pasco, with considerably larger, flabellate leaves ( Fig. 12) and larger inflorescences (see ...
Context 7
... in morphology which can be roughly grouped into four variants (compare Table 1). These include "Ribes incertum", originally differentiated from R. cuneifolium based on putatively elliptical leaves and yellow flowers, two characters that turn up independently from each other in different populations of the species across most of its range (see Fig. 14). The northern populations and most of the southern collections (esp. from Cuzco) are marginally different in habit and leaf shape, but there is no clear dividing line nor complete ecogeographical segregation from typical R. cuneifolium. We therefore advocate defining the subspecies broadly. 34,193' '' S, 77° 42,741' '' W, 26 -VI -04, ...
