Rubus deliciosus
Rubus niveus
boulder raspberry, delicious raspberry
Hill raspberry, Mysore, snowpeaks, snowpeaks raspberry
decumbent to erect, glabrous or sparsely short-hairy, eglandular or sparsely stipitate-glandular, not pruinose.
biennial, erect to arching, often scrambling, sparsely hairy, glabrescent, eglandular, strongly pruinose;
prickles sparsely to moderately dense, hooked to reflexed, stout, 3–9 mm, broad-based.
deciduous, simple;
stipules lanceolate to narrowly ovate, 5–8(–14) mm;
blade orbiculate to reniform, (1.5–)2–4(–5) × (2.5–)3–4.5(–7) cm, base shallowly cordate, 3–5(–7)-lobed, lobe apices broadly rounded to obtuse, margins doubly dentate, abaxial surfaces sparsely hairy, mostly along veins, sparsely stipitate-glandular.
deciduous, pinnately compound;
stipules linear-lanceolate, 4–8 mm;
leaflets (3–)5–7(–9), terminal ovate to broadly ovate, 4–6.7 × (2.4–)3.4–5.4 cm, base shallowly cordate, sometimes shallowly 3-lobed, margins coarsely serrate to doubly serrate, apex acute to short-acuminate, abaxial surfaces with scattered, reflexed, broad-based prickles on midveins, densely white-tomentose, eglandular.
1-flowered.
terminal and axillary, 1–11-flowered, cymiform.
pubescent, sparsely to densely short- to long-stipitate-glandular.
prickles absent or sparse, erect to reflexed, pubescent, eglandular.
bisexual;
petals white, obovate to ovate, 15–25(–30) mm;
filaments filiform;
ovaries glabrous, styles clavate, villous.
bisexual;
petals pink to magenta, broadly obovate to orbiculate, 4 mm;
filaments laminar;
ovaries densely hairy.
dark purple, hemispheric, to 1 cm;
drupelets 10–40, coherent, separating from torus.
purple-black, hemispheric to globose, 0.5–1.5 cm;
drupelets 50–75, coherent, separating from torus.
= 14, 21.
= 14.
Rubus deliciosus
Rubus niveus
Rubus deliciosus is recognized by its decumbent to erect, unarmed stems, relatively small simple leaves with obtuse to broadly rounded lobes, shallowly cordate bases, sparsely hairy abaxial surfaces, large flowers, white petals, glabrous or sparsely hairy sepals, and densely villous clavate styles. The distinction between R. deliciosus and R. neomexicanus is not always clear, especially when the former has more narrowly obtuse lobes and denser leaf abaxial hairs. Rubus deliciosus is also similar to R. bartonianus of Idaho and Oregon, as well as the Mexican R. trilobus Seringe. It might be reasonable to recognize a broader concept of R. deliciosus, one containing multiple infraspecific. Rubus deliciosus and its close relatives require a revisionary study.
Rubus deliciosus has long been planted for its ornamental value because of its large, showy flowers.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Rubus niveus is distinguished from other raspberries by its pinnately compound leaves with 5–7 leaflets, ovate to broadly ovate terminal leaflet, leaflets with prickles on the midvein, and pink to magenta, broadly obovate to orbiculate petals. The species was introduced into southern Florida around 1949 from seeds obtained in Kenya and quickly became popular for its fruits, which are edible fresh or frozen and are often used in preserves, pies, and tarts (J. F. Morton 1987).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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