Senna wislizeni var. pringlei (Rose) 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 2: 455-918.

  • Family

    Caesalpiniaceae

  • Scientific Name

    Senna wislizeni var. pringlei (Rose) H.S.Irwin & Barneby

  • Type

    Lectoholotypus, Pringle 7478, US! isotypus, GH!-Palmerocassia pringlei (Rose) Britton ex Britton & Rose, N. Amer. Fl. 23(4): 254. 1930.

  • Synonyms

    Cassia pringlei Rose, Palmerocassia pringlei (Rose) Britton, Cassia morelensis Greenm.

  • Description

    Variety Description - Strigulose with appressed hairs 0.15-0.3 mm or (locally) more densely pilosulous with erect hairs 0.3-0.5 mm; primary lvs mostly 1.2-4.5 cm, with (3-)4-5(-6) pairs of lfts up to 4-12.5 mm long; otherwise as given in key. [Key: "Stipules of primary lvs promptly caducous, usually before maturity of the associated lf; valves of pod dull when ripe, not raised over seeds or, if so, then only as a single low transverse ridge; secondary venulation of lower face of lfts not or obscurely prominulous; s. Mexico n. to the s. lobe of Chihuahuan Desert (to n. Zacatecas and s. Nuevo Leon), wholly s. of lat. 25°N. Body of pod 16-24 cm; ovules 31-40; thorny secondary branchlets often but not always present; s. Mexico in lat. 16-20°N (Colima to Puebla s. to Oaxaca)."]-Collections: 49.

    Distribution and Ecology - Thorn-forest and drought-deciduous brush-woodlands, sometimes on cliffs, on either volcanic or calcareous bedrock, (150-)350-1850 m, discontinuously widespread over interior arid valleys of s. Mexico, from Colima e. through Balsas Depression to Puebla, there extending e. to the forks of rio Papaloapan on the Gulf slope, s. to centr. and s. Oaxaca.-Fl. (IV-)VI-X(-XI).

  • Discussion

    Normally var. pringlei is inconspicuously strigulose with appressed or subap- pressed hairs, in this respect agreeing with var. painteri and var. wislizeni. An otherwise identical plant pilosulous overall with erect and slightly longer hairs has been collected twice on the north fork of rio Papaloapan in Puebla (near Coxcatlan and San Luis Tultitlanapa) and once in southeastern Oaxaca (near Yautepee). Morphologically this variant has the same claim to taxonomic recognition as has var. villosa, but it has not established an independent area of dispersal. The type-locality of Cassia pringlei is Tomellin on the south fork of the Papaloapan and several collections of typical var. pringlei have been made in the valley of Oaxaca, these together lying on a direct line between the known stations for the pilosulous form.

  • Common Names

    Mulato, rompebota(s), tecahuil, huesillo

  • Distribution

    Colima Mexico North America| Puebla Mexico North America| Oaxaca Mexico North America|