Disterigma pentandrum S. F. Blake, J. Washington Acad. Sci. 16: 364.  1926.  Type.  Ecuador.  Chimborazo:  Huigra, Rose 22512 (holotype, US;  isotypes, GH, NY;  photo of NY type NY neg. 9895).  Images:  Habit with flower.  Fruit.

        Terrestrial or epiphytic shrub to 4 m tall;  stem terete, striate, the bark cracking irregularly, glabrous;  twigs terete to subterete, bluntly and broadly angled, the nodes ± raised, somewhat rugose, glabrous or puberulent.  Leaves coriaceous, crisp- or inflated-succulent and 1-2 mm thick when fresh but both surfaces conspicuously wrinkled when dry, elliptic, 8-20(-33) x 3-14(-20) mm, base rounded to obtuse, apex rounded to obtuse, the tip slightly retuse, glabrous;  obscurely 3 (-5)-plinerved, midrib usually impressed above and raised beneath, otherwise venation obscure;  petiole terete, rugose, 1-2.3 mm long, puberulent, glabrate.  Inflorescence axillary, the flowers solitary, essentially sessile, surrounded by a series of numerous (ca 6), membranous, persistent, ovate to ovate-lanceolate, acute to acuminate, stramineous, glabrous but marginally glandular-fimbriate bracts to ca. 7 mm long;  floral bract similar to inflorescence bracts, ca. 7 x 3 mm;  pedicel less than 0.5 mm long, with a series of glandular fimbriae at distal tip;  bracteoles ovate-lanceolate, acuminate, ca. 7 x 2.5 mm, glabrous but marginally glandular-fimbriate.  Flower 5-merous, with calyx ca. 6.5 mm long, glabrous, light pink to red;  hypanthium cylindric, terete or ± bluntly angled, 1.5-2.2 mm long;  limb erect-campanulate, 4.5-5 mm long;  lobes narrowly long-triangular, long-acuminate, 2.5-4 mm long, marginally glandular-fimbriate, distally thickened and often setose;  sinuses obtuse to rounded;  corolla cylindric, terete, 11-12 mm long and ca. 4 mm diam., glabrous but with few glandular fimbriae distally, red, the lobes spreading, oblong, obtuse, 1.2-2 mm long;  stamen 5, ca. 8.5-9.5 mm long;  filaments slightly geniculate, ca. 4 mm long, puberulent;  anthers ca. 6 mm long;  thecae ca. 3 mm long;  tubules 2, distinct, ca. 3 mm long, dehiscing by clefts the entire length of tubule;  style as long as corolla, glabrous.  Berry spherical, blue to lavender.

        Distribution.  Endemic to Ecuador;  premontane to montane cloud forest at 850-3400 m altitude.