Monographie der Turneraceen. 



77 



15. Piriqueta racemosa Sweet, annua, caule 30 — 60 cm alto, pilis 

 aureis v. rufescentibus , crassitiem caulis aequantibus v. duplo super- 

 antibus , basi plerumque coronula pilorum stellarium pluries minorum 

 circumdatis hispido, pube simplice tenuissima albida plus minus densa 

 intermixta, setulis deficientibus ; foliis inferioribus J0 — 20, raro — £0 mm 

 lange petiolatis, ovatis usque lanceolatis, 2 — 3-plo longioribus quam 

 latioribus eglandulosis : floribus heterostylis, in racemum terminalem 

 superne aphyllum collectis; prophyllis nullis; pedicellis fruct. 3 -5 mm 

 longis; calyce 4,5 — 8 mm longo, in 2 / 5 — V 3 alt. coalito; petalis luteis v. 

 aurantiacis; fructibus dorso laevibus, nunc obsolete reticulato-impressis; 

 seminibus obovato-oblongis, sed arcuato-curvatis, nodis reticuli gibberosis. 



Piriqueta racemosa Sweet ex Steud. Nomencl. II ed. II, 724. 



Turnera racemosa Jacq. Hort. Vindob. III, 49; Willd. Spec. Plant. 

 I, 1505 et Herb. n. 6090!; DC. Prodr. III, 348 {excl. patria); CambA in 

 St. HU. Ihr. Bras. merid. II, 163. 

 Icon: Jacq. I. c. Hl t. 94! 



Cotyledones ovato-oblongae, 2— 272-pl° longiores quam latiores, in petiolum 

 duplo breviorem pilosulum angustatae. Caulis supra basin 2 — 4,5 mm crassus, teres 

 obsolete striatus. Folia acuta, raro obtusiuscula, basi plerumque rotundata, rarius 

 paullo in petiolum protracta v. emarginato-subcordata, inferiora 4 — 10 cm longa, 1,5—5 cm 

 lata, margine piano fere usque ad basin inaequaliter crenata v. crenato-dentata, nervis 

 supra paullo v. obsolete impressis et pilis stellaribus aequaliter inspersa, subtus plus 

 minus tomentosa v. ad nervös hirsuta, suprema decrescentia, celeriter minora et subito 

 ad bracteas vix 1 mm longas subulatas, dein ad callos fasciculosque pilorum reducta. 

 Racemus postremo laxus, usque 40 cm longus, axe post delapsum pedunculorum 

 inferiorum longe denudato; pedunculi postremo 1 — 4 cm longi, parce hispidi et obsolete 

 pilosuli. Calyx extrinsecus aureo-tomentosus hispidusve, intus post filamenta parce 

 v. parcissime pilosus, lobis lanceolatis obtusiusculis v. obtusis, saepe mucronatis 3- v. 

 sub-5-nervibus. Petala calycem dimidio v. fere duplo superantia, 7 — 10 mm longa, 

 ovata, inferne subcuneata glaberrima, Corona 0,5 — 0,8 mm longa usque ad medium fim- 

 briato-lacera. Filamenta tubo 0,7 — 1 mm longe adnata, glaberrima, longiora 4,5— 5,5 mm, 

 breviora 3— 3,5 mm longa; antherae clausae elliptico-oblongae, 1,5 — 2 mm longae, 0,6 ad 

 0,8 mm latae, vix 2 l / 2 -pm longiores quam latiores, apice obsolete emarginatae, iu'/j — 2 / 5 

 alt. affixae, defloratae superne revolutae, cruribus patentibus. Styli glabri v. pilis parcis 

 tenuibus rectis obsiti, apice er. 0,6 mm longe fasciculatim multipartiti, stigmatibus ab 

 antheris 1 — 1,5 mm distantibus, longiores 3,5 — 4 mm, breviores 1 — 2 mm longi. varium 

 36 — 44-ovulatum. Fructus obovoideus v. globulosus 4,5-9 mm longus; valvae dorso 

 flavidae v. flavo-virides, pilis simplieibus adpressis parcis v. crebrioribus obsitae, intus 

 glabrae flavescentes v. flavido-virescentes. Semina 1,7—2 mm longa, superne 0,6 — 1 mm 

 crassa, nigrescentia, striis incrassatis postremo inter sese punetula impressa relinquenti- 

 bus, basi in bilum conicum constricta, chalaza non v. parum prominente. 



Habitat in Brasiliae prov. Rio de Janeiro, Minas Geraes, Bahia, Pernambuco et 

 Ceard: Glaziou n. 10885, Pohl n. 3228, 5146, Blanchet n. III, Luschnath n. 143, 

 Martius n. 2197, 2456, Gardner n. 929, 1668 et alü. — Flor. Febr.— Oct. 



Obs. Non Cambessedes, ut p. 9 indieavi, sed Jacquin coronam in floribus 

 P. racemosae primus detexit: „Infra et inter singulas has (lacinias perianthii) tubus 

 calycinus munitur squamula subiotunda, eiliato-divisa et tantisper connivente, qua 

 caret Turnera ulmifolia. Petala inserta limbo calycino supra squamularum exortum" 1. c. 



