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  • F. nigricans
  • F. nigricans

F. nigricans

FLOWER PARTS

  • Pedicel : slender, 3-9mm long, suberect in bud-divergent or drooping at anthesis
  • Ovary : narrowly cylindric-fusiform, densely canescent or strigillose, 6-11mm long x 2-3mm wide
  • Tube color : pale pink to lavender or light red
  • Tube shape : subcylindric, canescent-strigillose outside, densely pilose inside in lower part
  • Tube dimensions : 14-22mm long x 1.5-3mm wide and slightly bulbous at the base, gradually widened above until 3-5 (to 6)mm wide at the rim
  • Sepal color upper : pale pink to lavender or light red
  • Sepal color lower :
  • Sepal shape : lanceolate, acute, spreading at anthesis
  • Sepal tips :
  • Sepal dimensions : 6-10mm long x 3-4mm wide
  • Corolla opening color : dark purple
  • Corolla mature color :
  • Corolla shape : narrowly elliptic-oblong, acute, suberect to spreading at anthesis
  • Corolla silhouette :
  • Petal margins :
  • Corolla dimensions : 5-10mm long x 2-3.5mm wide
  • Nectary : green, shallowly 4-lobed, about 1.5mm high
  • Stamens :
  • Filaments : deep purple, 5-6mm x 3-4mm long
  • Anthers : oblong, 1.5-2mm long x about 1mm wide, dull white
  • Pistil :
  • Style : glabrous, pink-purple
  • Stigma : capitate, subtetragonous, 2-3mm long x 2-3.5mm wide, 4-lobed in upper stigma, pink, slightly exserted beyond the anthers or in contact with the antesepalous stamens at anthesis

MISCELLANEOUS

  • Flower : single
  • Flowers : few to numerous, axillary in upper leaf nodes or in terminal bracteate racemes, rachis 4 to 22 cm long, bracts narrowly elliptic, short petiolate, loosely spaced
  • Flower size :
  • Flower display :
  • Flower bud :
  • Fruit : cylindric, 15-25mm long x 6-10mm wide, dull green to flushed purple, strigillose, slightly verrucose before maturity
  • Seed : tan, 1.3-1.6mm long x 0.8mm wide
  • Habit : erect to scandent shrubs with suberect to spreading branches
  • Hardiness:
  • Height : 1-3m
  • Light/Climate :
  • Optimal light conditions :
  • Remarks : found in 1843 in the Venezolan Andes, flowers are 3,5cm long, natural hybrids with F. gehrigeri, F. putumayensis and F. venusta are known
  • Named : after the very dark purple/blackish petals
  • Lookalikes :
  • Year (of first description) : 1849
  • Botanist : Linden Jean-Jules
  • Authors : Linden ex Planchon 1849
  • Original publication : Fl. Serres Jard. Eur. 5: 481 1849
  • Habitat : scattered to locally frequent in forest openings, stream banks, along roadsides, and in moist thickets in mid elevation cloud forest in Venezuela, from Lara to Tachira at elevations from 2,100 to 2,650 meters, and in Colombia (in all three cordilleras) in the Cordillera Oriental known only from Norte de Santander near the Venezuelan border, in the Cordillera Central in Tolima, Quindio, Caldas, and Antioquia and in the Cordillera Occidental from Antioquia south to Cauca
  • Elevation : 1700-2700
  • Native country : Colombia, Venezuela
  • Synonyms : F. atrorubra, Johnston 1925, F. adpressibilis, Steyermark 1952
  • Gametic chromosome number n = 11

FOLIAGE

  • Leaves : mostly ternate, opposite or rarely quatemate, membranous, smooth to sulcate nerved, petioles strigillose, 12 to 35 (to 48) mm long, stipules narrowly triangular, dark purple, 1 to 2 mm long, about 0.8 mm wide, succulent at the base, subulate at the apex, subpersistent
  • Foliage color upper side : medium-dark green and strigillose to subglabrous
  • Foliage color lower side : pale green and strigillose, especially along the veins
  • Leaf dimensions : (4-) 7-15(-18)cm long x (2-) 3-8(-9)cm wide
  • Leaf shape : mostly elliptic or obovate, but also spatulate or subpanduriform
  • Leaf margin : remotely gland-denticulate
  • Leaf tip : acute to rounded
  • Leaf base : acute to attenuate or cuneate and sometimes noticeably unequal
  • Pubescence :
  • Veins : secondary veins 11 to 16(~20) on either side of the midvein, sometimes red tinged
  • Stems :
  • Branches : young growth densely canescent with appressed or less often suberect hairs, branchlets terete, 2 to 5 mm thick, dull purple to light green, older branches with light brown, splitting bark