Arachnothryx is a genus of flowering plants in the family Rubiaceae. It contains about 101 species which range from Mexico to Peru and to Trinidad.

Taxonomy Arachnothryx was named by Jules Émile Planchon in 1849.Arachnothryx In: International Plant Names Index. (see External links below).Jules Émile Planchon. 1849. Flore des Serres et des Jardins de l'Europe 5:442 and illustration. (see External links below). This generic name is derived from Ancient Greek: arachne or arachnos, "a spider", and thrix or trichos, "hair".

As currently circumscribed, Arachnothryx is paraphyletic over Cuatrecasasiodendron, Gonzalagunia, and Javorkaea. Some authors have included these genera in a broadly defined Rondeletia, but molecular phylogenetic studies have shown that they are more closely related to Guettarda than to Rondeletia.

Species 101 species are accepted.

Arachnothryx angustispica Arachnothryx aspera (Standl.) Borhidi Arachnothryx atravesadensis (Lorence) Borhidi Arachnothryx axillaris Arachnothryx bertieroides (Standl.) Borhidi Arachnothryx bourgaei Arachnothryx brachytyrsa Borhidi Arachnothryx brenesii (Standl.) Borhidi Arachnothryx buddleioides (Benth.) Planch. Arachnothryx calycophylla Steyerm. Arachnothryx calycosa (Donn.Sm.) Borhidi Arachnothryx capitellata (Hemsl.) Borhidi Arachnothryx caucana (Standl. ex Steyerm.) Steyerm. Arachnothryx chaconii (Lorence) Borhidi Arachnothryx chiapensis (Brandegee) Borhidi Arachnothryx chimalaparum Lorence ex Borhidi Arachnothryx chimboracensis (Standl.) Steyerm. Arachnothryx chiriquiana (Lorence) Borhidi Arachnothryx colombiana (Rusby) Steyerm. Arachnothryx costanensis Steyerm. Arachnothryx cupreiflora (K.Schum. & K.Krause) Steyerm. Arachnothryx darienensis (Standl.) Borhidi Arachnothryx discolor (Kunth) Planch. Arachnothryx dwyeri (Lorence) Borhidi Arachnothryx educta (Standl. ex Steyerm.) Steyerm. Arachnothryx euryphylla (Standl.) Steyerm. Arachnothryx evansii (Lorence) Borhidi Arachnothryx flocculosa Borhidi Arachnothryx flores-olverae Arachnothryx fosbergii Steyerm. Arachnothryx garciae Standl. ex Steyerm. Arachnothryx ginetteae (Lorence) Borhidi Arachnothryx glabrata (Standl.) Steyerm. Arachnothryx gonzaleoides (Standl.) Borhidi Arachnothryx gracilis (Hemsl.) Borhidi Arachnothryx gracilispica (Standl.) Borhidi Arachnothryx guerrerensis (Lorence) Borhidi Arachnothryx guettardioides Standl. ex Steyerm. Arachnothryx heteranthera (Brandegee) Borhidi Arachnothryx hispidula Griseb. Arachnothryx hondurensis (Donn.Sm.) Lorence Arachnothryx jaliscensis Arachnothryx jurgensenii (Hemsl.) Borhidi Arachnothryx laniflora (Benth.) Planch. Arachnothryx latiloba Borhidi Arachnothryx leucophylla (Kunth) Planch. Arachnothryx lineolata Borhidi Arachnothryx linguiformis (Hemsl.) Borhidi Arachnothryx linguiloba Borhidi & Diego Arachnothryx lojensis Steyerm. Arachnothryx macrocalyx (Standl. & Steyerm.) Borhidi Arachnothryx manantlanensis (Lorence) Borhidi Arachnothryx megalantha (Lorence) Lorence Arachnothryx mexicana (Turcz.) Borhidi Arachnothryx michoacana Borhidi Arachnothryx monteverdensis (Lorence) Borhidi Arachnothryx monticola Borhidi Arachnothryx myriantha (Standl. & Steyerm.) Borhidi Arachnothryx nebulosa (Standl.) Borhidi Arachnothryx nelsonii Lorence Arachnothryx nitida (Hemsl.) Borhidi Arachnothryx ovandensis (Lundell) Borhidi Arachnothryx ovata (Rusby) Steyerm. Arachnothryx pansamalana (Standl.) Borhidi Arachnothryx pauciflora Borhidi Arachnothryx perezii (Standl. ex Steyerm.) Steyerm. Arachnothryx peruviana (Standl.) Steyerm. Arachnothryx povedae (Lorence) Borhidi Arachnothryx purpurea (Lorence) Borhidi Arachnothryx pyramidalis (Lundell) Borhidi Arachnothryx reflexa (Benth.) Planch. Arachnothryx rekoi (Standl.) Borhidi Arachnothryx ricoae (Lorence) Borhidi Arachnothryx rubens (L.O.Williams) Borhidi Arachnothryx rufescens (B.L.Rob.) Borhidi Arachnothryx rugulosa (Standl.) Steyerm. Arachnothryx rzedowskii (Lorence) Borhidi Arachnothryx sanchezii Borhidi & Salas-Mor. Arachnothryx scabra (Hemsl.) Borhidi Arachnothryx scoti (Lorence) Borhidi Arachnothryx secunda (Standl.) Borhidi Arachnothryx secundiflora (B.L.Rob.) Borhidi Arachnothryx septicidalis (B.L.Rob.) Borhidi Arachnothryx sessilis Borhidi & G.Ortiz Arachnothryx sinaloae Borhidi Arachnothryx skutchii (Standl. & Steyerm.) Borhidi Arachnothryx sousae Borhidi Arachnothryx spectabilis (Steyerm.) Rova Arachnothryx stachyoidea (Donn.Sm.) Borhidi Arachnothryx subglabra Borhidi & N.C.Jiménez Arachnothryx tacanensis (Lundell) Borhidi Arachnothryx tayloriae (Lorence) Borhidi Arachnothryx tenorioi (Lorence) Borhidi Arachnothryx tenuisepala Borhidi Arachnothryx thiemei (Donn.Sm.) Borhidi Arachnothryx torresii (Standl.) Borhidi Arachnothryx tuxtlensis (Lorence & Cast.-Campos) Borhidi Arachnothryx uxpanapensis (Lorence & Cast.-Campos) Borhidi Arachnothryx venezuelensis Steyerm. Arachnothryx villosa (Hemsl.) Borhidi Arachnothryx wendtii (Lorence & Cast.-Campos) Borhidi

Formerly placed here Renistipula costaricensis (Standl.) Borhidi (as Arachnothryx costaricensis ) Renistipula galeottii (Standl.) Borhidi (as Arachnothryx galeottii ) Renistipula izabalensis (Standl. & Steyerm.) Borhidi (as Arachnothryx izabalensis )

References

External links

Arachnothryx in the World Checklist of Rubiaceae Arachnothryx At: Index Nominum Genericorum At: References At: NMNH Department of Botany At: Research and Collections At: Smithsonian National Museum of Natural History Arachnothryx At Plant Names At: IPNI Arachnothryx In: Volume 5 (1849) Of: Fl. Serres Jard. Eur. At: Titles At: Botanicus Arachnothryx At: List of Genera At: Rubiaceae At: List of families At: Families and Genera in GRIN At: Queries At: GRIN taxonomy for plants Arachnothryx At: Choose a Plant At: Meet the Plants At: National Tropical Botanical Garden