Compilation
Ranunculus macranthus

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Name

Identification
Isotype of Ranunculus cuneiformis Small [family RANUNCULACEAE ] Verified by Thomas Osler Duncan, Ranunculus macranthus Scheele [family RANUNCULACEAE ] (stored under name); Verified by Thomas Osler Duncan,
Related name
  • Ranunculus macranthus
  • Ranunculus not on sheet
  • Ranunculus fascicularis
  • Ranunculus peltatus
  • Ranunculus cuneiformis
  • Ranunculus delphinifolius
  • Ranunculus townsendii
  • Ranunculus fasciculatus
  • Ranunculus orthorhynchus
  • Ranunculus petiolaris
  • Ranunculus auricomus

Flora

Entry for Ranunculus fasciculatus Sessé & Moçiño [family RANUNCULACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 3,
Names
Ranunculus fasciculatus Sessé & Moçiño [family RANUNCULACEAE], Fl. Mexic. ed., 2, 134. 1894
Ranunculus macranthus var. arsenei L. D. Benson [family RANUNCULACEAE]
Ranunculus petiolaris Humboldt [family RANUNCULACEAE], Bonpland, & Kunth ex de Candolle var. arsenei (L. D. Benson) T. Duncan
Information
Stems erect or decumbent, not rooting nodally, hirsute to nearly glabrous, base not bulbous. Roots fleshy and somewhat tuberous. Basal leaf blades ovate to deltate in outline, 3(-5)-foliolate, 2.5-14.9 × 2.3-19.9 cm, leaflets 1-2×-lobed or -parted, ultimate segments narrowly oblong to elliptic or lanceolate, margins toothed, apex narrowly acute to rounded-acute. Flowers: receptacle hispid; sepals reflexed 1-2 mm above base, 5-10 × 3-5 mm, hispid; petals 11-16, yellow, 8-21 × 2-5 mm. Heads of achenes globose to ovoid, 6-13 × 7-9 mm; achenes 2.4-3.4 × 2-2.4 mm, glabrous, margin forming rib or narrow wing 0.1-0.4 mm wide; beak filiform from deltate base, straight, 1.8-2.5 mm, filiform tip often deciduous, leaving 1-1.2 mm deltate beak.
Phenology
Flowering late spring-summer (Jun-Aug)
Altitude range
1000-2200 m
Distribution
Mexico.USA Ariz.USA Tex.
Discussion
I am following G. L. Nesom (1993) in treating Ranunculus fasciculatus as a distinct species. This taxon was considered a variety of R. macranthus by L. D. Benson (1948) and a variety of R. petiolaris by T. Duncan (1980). These disparate opinions result from different interpretations of Mexican members of the R. petiolaris group.

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