Zygia multipunctata Barneby & J.W.Grimes

  • Authors

    Rupert C. Barneby

  • Authority

    Barneby, Rupert C. & Grimes, James W. 1997. Silk tree, guanacaste, monkey's earring: A generic system for the synandrous Mimosaceae of the Americas. Part II. , , and . Mem. New York Bot. Gard. 74: 1-149.

  • Family

    Mimosaceae

  • Scientific Name

    Zygia multipunctata Barneby & J.W.Grimes

  • Type

    COLOMBIA. Antioquia, mun. Anorí: along Río Anorí, 28 km SW of Zaragoza, near mouth of Quebrada La Tirana, 9 Apr 1977 (fl.), W. S. Alverson (with S. White & J. D. Shepherd) 386. — Holotypus, HUA n.v.; isotypus, NY (on 2 sheets).

  • Synonyms

    Zygia picramnioides (Standl. ex Killip) Killip

  • Description

    Species Description - Slender macrophyllidious cauliflorous trees ±5 m, glabrous except for a few minute trichomes at apex of calyx-teeth and corolla-lobes, the dull olivaceous foliage subconcolorous, the hypophyllum of lfts densely minutely punctate overall, the long loose pendulous fl-spikes arising from knots near base of trunk. Stipules and axillary bud-scales scarcely known, lanceolate ±1.5(—?) mm. Lf-formula i/3½, lfts 14 per leaf; petioles including obese nigrescent pulvinus 4-5 cm x 1.3-2.4 mm, subterete; pinna- rachises 11-16 cm, the longer interfoliolar segments 3-6 cm; lft-pulvinules blackish 3.5-5 x 1.5-1.8 mm; lfts elliptic or oblong-elliptic from inequilateral, broad-cuneate base, contracted into an acute acumen ±1 cm, the terminal pair 11-16 x 4.5-6.5 cm, 2.4-2.5 times as long as wide; venation sharply prominulous dorsally, less so ventrally, the subcentric costa giving rise on each side to 5-7 major incurved-ascending secondary nerves weakly brochidodrome within the plane margin, the strongest on posterior side produced about to midblade, the tertiary connecting venules and reticulum of finer veinlets angulately sinuate. Axis of fl-spikes, including short peduncle, attaining 2-3 dm, the fls well separated along it; bracts submembranous, narrowly ovate 0.4-0.6 mm, deciduous; pedicels drum-shaped 0.2-0.3 x 0.6-0.7 mm, nigrescent; calyx membranous, shallowly obconic-campanulate 0.7-1 x 1.3-1.6 mm, the depressed- deltate teeth not over 0.2 mm; corolla trumpet-shaped 8-8.5 mm, the stemonozone 0.5-0.8 mm, the tube finely striate-nerved, the erect, ovate nerveless lobes unequal, 0.4-1.4 mm; androecium 36-42-merous, 27-40 mm, the tube 19.5-24 mm, the white tassel 8-16 mm; intrastaminal disc shallowly lobed ±0.4 mm; ovary linear-ellipsoid glabrous; style attaining ±4 cm, slightly dilated into the poriform stigma. Pods unknown.

    Distribution and Ecology - Riverbanks and cliffs at margin of wet forest, ±500-1200 m, known only from the valleys of Ríos Anorí and Barroso, near 6°-7°18/N, 75°-76°W in NE Antioquia, Colombia. — Not mapped. — Fl. III-V.

    Relationships - Zygia multipunctata resembles Z. picramnioides in general aspect and especially in relatively long primary leaf-stalks, but the perianth is glabrous except for minute cilia (not silky overall), the stamens are fewer (36-42, not 60), and the dorsally punctate leaflets have no match in the genus.

  • Distribution

    Antioquia Colombia South America|