Senna macranthera var. striata (Vogel) H.S.Irwin & Barneby

  • Authors

    Howard S. Irwin, Rupert C. Barneby

  • Authority

    Irwin, Howard S. & Barneby, Rupert C. 1982. The American Cassiinae. A synoptical revision of Leguminosae tribe Cassieae subtrib Cassiinae in the New World. Mem. New York Bot. Gard. 35, part 1: 1-454.

  • Family

    Caesalpiniaceae

  • Scientific Name

    Senna macranthera var. striata (Vogel) H.S.Irwin & Barneby

  • Type

    Holotypus, †B; no isotypus or pho- totypus known to survive.—C. splendida var. striata (Vogel) Bentham in Martius, Fl. Bras. 15(2): 105. 1870.

  • Synonyms

    Cassia splendida var. striata (Vogel) Benth., Cassia striata Vogel

  • Description

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    Variety Description - Fruticose, adult when 1.5-4 m; stipules 6-16 mm; distal lfts elliptic or elliptic- oblanceolate (5.5-)6- 11 x 1.6-3.8 cm, pubescent on both sides or only beneath, the hairs forwardly appressed or accumbent up to 0.2-0.5 mm; sepals submembranous, the long inner ones up to 8-14.5 x 5.5-7.5 mm; style 3.5-5 mm, ovules (96-) 100-144; pod 12-20 cm.—Collections: 16. [Key: "Plants of Atlantic and planaltine Brazil (Piaui and Ceara to s. Goias and Sao Paulo). Lvs variable in size; pod variable in length and diam but short (11 cm or less) only n.-ward from centr. Minas Gerais and Bahia. Calyx relatively ample, the largest inner sepal 7-14 x 4.5-8 mm; shrubs 1.5-3 m. Ovules 92-144. Lfts densely softly pilosulous with spreading-incumbent hairs, either on both faces or beneath only. Stature and lfts diverse. Distal lfts of larger lvs 2-6(-7) cm; shrubs to ±3(-4) m; pod 7-10 cm, 112-140-ovulate. Distal lfts of larger lvs (5.5-)6-11 x 1.6-3.8 cm, strigulose beneath; pod 12-20 cm."]

    Distribution and Ecology - Caatinga, mostly below 600 m, scattered through the hill country of e.-centr. Brazil from e. Pernambuco s. on the Atlantic slope to the Pardo valley in s. Bahia (lat. 8-15°S); Espigao Mestre and S. Francisco valley in w. Bahia (Rio Itaguari s. of Cocos; Cristopolis) and adjacent Goias (Posse).—Fl. III-VII.

  • Discussion

    The var. striata resembles var. nervosa and var. macranthera in its leaflets and relatively long pod, but is apparently a less arborescent plant adapted to a more xeric climate and has the large membranous calyx of var. pudibunda. It may perhaps consist of luxuriant states of the latter, found in nearly the same latitudes and environments, but for the present the long pod and larger leaflets appear sufficiently distinct. The situation will need reappraisal as more fruiting material accumulates. We have adopted the epithet striata with some misgiving, for we have found no authentic material of Cassia striata and the type-locality is not recorded. Vogel’s full description in Linnaea is, however, in full agreement with our present concept. Bentham, who may well have seen genuine C. striata, reduced it to a variety of C. splendida, from which he separated it by the pubescent stems and foliage and the long setiform stipules, characters that fit our var. striata to the letter. The variety is cultivated in southern California (LASCA).

  • Distribution

    Bahia Brazil South America| Goiás Brazil South America|