Senna stipulacea var. anglorum

  • Title

    Senna stipulacea var. anglorum

  • Authors

    Howard S. Irwin, Rupert C. Barneby

  • Scientific Name

    Senna stipulacea var. anglorum H.S.Irwin & Barneby

  • Description

    109b. Senna stipulacea (Aiton) var. anglorum Irwin & Barneby, var. nov., a var. stipulacea foliolis utrinque laxe reticulatim venulosis (nec supra ev- eniis, infra simpliciter penninerviis) ovulisque paullo minus numerosis plerumque 5-7 (nec 8-12) diversa.—CHILE. Valparaiso: Valparaiso, anno 1832, Cuming 708.—Holotypus, K (hb. Hook.); isotypus, BM.(?)Cassia myrtifolia Philippi ex Reiche, Fl. Chile 2: 36. 1897.—"Provincia de Valparaiso."— Typus to be sought at SGO; the locality and the description of oval-orbicular stipules to 1 cm long suggest var. anglorum.

    Cassia stipulacea sensu Hooker, Bot. Miscell. 3(2): 210. 1829, max. ex parte (exclus. pl. e Concepcion); Clos in Gay, 1854, p. 241, ex parte; Bentham, 1871, p. 538, ex parte; Turrill, Curtis’s Bot. Mag. 172(4): t. 345. 1859.

    Characters as given in key; filaments of abaxial stamens a little shorter, of 2 longer ones 2-2.5 mm, of the centric one 1.8-2 mm; style 1.2-2 mm.—Collections: 10.

    Wooded ravines and moist thickets along and near the coast of central Chile, mostly below 500 m, known only from the provinces of Valparaiso and Coquimbo.—Fl. VIII-XII(-?).

    The northern form of the mayu was collected so frequently by the earlier botanists in Chile, by Gay, Poppig, Bertero, Cuming, Macrae, Bridges and Mathews, that it tended to eclipse the original C. stipulacea of Pavon both in herbaria and in the literature. While variable in pubescence, the foliage tends to be of a darker green than that of var. stipulacea; it is perhaps of thinner texture when fresh. The portrait in Curtis’s Botanical Magazine cited above is an excellent likeness. At the time this was written up by Turrill the source of the model was unknown, but according to a letter filed with a cultivated specimen at Kew it was grown from seed collected by G. W. Robinson in Renaca valley 10-12 miles north of Valparaiso.