Flora of the Hawaiian Islands
Dicotyledon Literature for Rubus rosifolius
Lorence & Wagner, 2020.
   Rosaceae -- The Rose Family Bibliography
      Rubus rosifolius

Common name(s): blackberry, raspberry, `akala, `akalakala, Mauritius raspberry, ola`a, thimbleberry
General Information
DistributionNative to Asia, now widely naturalized in tropical areas.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

Shrub or subshrub; stems erect, arching, or trailing, 10‒20 dm long, moderately to sparsely pilose, sparsely covered with recurved prickles, 1‒4 mm long with elongate bases.
Leaves pinnately compound, petiolate; leaflets 7 or sometimes only 5 in distal leaves, broadly lanceolate, 1.5‒8 cm long, (0.6‒)1‒3 cm wide, the terminal one slightly larger, sparsely pilose to glabrate and also sometimes glandular dotted, margins doubly serrate, petiolules 0.1‒0.3 cm long, rachis, petiolules, and petioles pilose, rachis and petioles also usually covered with small recurved prickles; petiole 1.5‒4 cm long; stipules filiform, 0.6‒0.8 cm long.
Inflorescences terminal or axillary, solitary or sometimes 2‒3-flowered. Flowers with lanceolate calyx lobes, 8‒15 mm long, both surfaces finely tomentose, apex long-attenuate; petals white, obovate, 10‒20 mm long.
Fruit red at maturity, subglobose, 2‒3.5 cm long, easily deciduous from the receptacle.
Seeds reniform, ca. 1.5 mm long, whitish tan, testa deeply foveolate-reticulate.
Nancy Khan