Strychnos jobertiana Baill.
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Authority
Krukoff, Boris A. & Barneby, Rupert C. 1969. Supplementary notes on the American species of Strychnos. VIII. Mem. New York Bot. Gard. 20: 1-93, IX. 94-99.
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Family
Loganiaceae
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Scientific Name
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Description
Species Description - Mature fruits globose, large, the largest seen 6 cm in diam; shell thick, 3-3.5 mm thick, very hard, dark gray, dull, not shining, rough; testa crustaceous; seeds many, more or less discoid, about 23 mm long and 10 mm broad; fruit-pedicels about 11 mm in diam (Black 48-2657 and others). Fruits resemble those of S. ramentijera but are smaller. Fruits of these two species can be told apart from those of any other species.
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Discussion
Strychnos jobertiana is a giant bush-rope confined to the high forest on terra firme. This species (root bark of Prance & Silva 58713) was studied by Prof. Marini-Bettolo and his co-workers. Only tertiary alkaloids were found and identified as diaboline and o-acetyl-diaboline B. The latter, although previously known in synthetic form, was found for the first time in a plant and was named Jobertine (109d).
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Distribution
Brazil: Territory of Amapa: Miranda Bastos 163 (RB), 245 (RB); Para: Rio Capim, Froes 33606 (IAN), 33622 (IAN); Black 48-2359 (IAN); vicinity of Paragominas, km. 161 of Belem-Brasilia highway, Prance & Silva 58713; Rios Pacaja & Muirapiranga (varzea), Prance, Pennington & Silva 1459; chapada da Serra de Almeirim, Oliveira 2375 (IAN); near Belem, Rodrigues s n (728, INPA); Amazonas: basin of Rio Solimoes, Herb. Schwacke 589 (Calderão) (RB); Froes 23765 (Igarape Belem) (IAN); basin of Rio Negro,
Brazil South America|