Arachnothryx garciae Standl. ex Steyerm.

• Authority

  Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.

• Family

  Rubiaceae

• Scientific Name

  Arachnothryx garciae Standl. ex Steyerm.

• Description

  Latin Diagnosis - Frutex ca 3 m, ramis parce adpresso-pilosis; stipulis 10 mm longis vagina 2-3 mm longa extus strigillosa in apendicam oblongam subacutam 7-8 mm longam parce adpresso-pilosam exeuntibus; foliis petiolatis, petiolis 3-5 mm longis villosulis vel laxe pilosis; laminis oblongo-ellipticis apice acuminatis basi acutis 9-15 cm longis 3-5.2 cm latis supra lucidis non-rugulosis glabris praeter costam mediam nervos lateralesque pilis remotis arachnoideis munitos, subtus venulis tertiariis parce arachnoideo-pubescentibus costa media nervis lateralibusque laxe adpresso-pilosis, nervis lateralibus utroque latere 9-12; inflorescentiis terminalibus trichotome ramosis 7.5 cm longis 7 cm latis, ramis villosulis vel laxe pilosis; hypanthio turbinato 2-3 mm longo dense arachnoideo-pubescenti; calycis lobis 4 oblongo-oblanceolatis vel oblanceolatis obtusis vel subobtusis primum in anthesi adscendentibus demum reflexis 3.5-6 mm longis 1.2-2.3 mm latis extus basin versus subadpresso-pilosis intus glabratis; corollae tubo 16-18 mm longo extus modice vel dense arachnoideo-pubescenti intus ad faucem glabro, lobis 4 subor-bicularibus interdum crenulatis ca 3 mm longis 2.5-3 mm latis extus basin versus adpresso-strigosis vel hirsutulo-strigosis supra medium glabris, intus supra medium glabris basin versus papillatis; staminibus ad apicem tubi aflfixis inclusis, antheris 3 mm longis.

• Discussion

  This is related to Arachnothrix calycophylla Steyermark, from which it differs in the longer corolla-tube, non-rugulose leaves with less pubescence on the lower surface, narrower leaf-blades, and broader calyx-lobes.