Compofltitae. 271 



Obs. A formis P. ciliaris L. habitu similHrnis Costa media involucri 

 crasse prominente et usque ad apieem producta sicut floribns radii involu- 

 criim parum superantibus facile dignoscenda. 



w 



4. Pectis tenuieaiilis Urb. annua prostrata v. ascendens (y. iuitio 

 subsimplex et erecta), caulibus 3 — 15 cm. longis dichotomo ramosis, 

 ad basiii raro radicantibus, 0,4 — 0,8 mm. crassis, brevissime bifariam 

 pilosis, superne plus minus compressis; foliis oblongo-lanceolatis v. 

 ublongo-linearibus, 5 — 15 mm. longis, 1,5 — 3,5 mm. latis, apice obtiiso 

 luiicronatis v. obsolete apiculatis, ad basin versus paribus 3 — 5 setarum 

 ciliatis, glandulis crebris (raro parcis v. parcissimis) in facie subtus 

 inordinate sparsls; capitulis in dichotomiis v. ad apieem ramorum soli- 

 tariis v. plerumque in glomerulos 2 — 5-cephalos collectis sessilibus v. 

 usque 2 mm. longe pedunculatis, 5 — 6 mm. longis, 1,5 — 2 mm. crassis; 

 involucri phyllis 3, obovato-oblongis, apice obtusis v. subtruncatis, 

 nunc obsolete et obtuse apiculatis, 4—5 mm. longis, superue 2—2,3 nun. 

 latis, dorso fere usque ad apieem crasse et obtuse carinatis, glandulis 

 juxta marginem parcis v. parcissimis linearibus v. oblongis, sub apice 

 crebrioribus ovalibus v. subrotundis inspersis; floribus 7 — 8 in quoque 

 capitiilo, flavis, 3 radii 3 mm. longis, stjli ramis parti integrae acqui- 

 iongis v. dimidio longioribus; floribus 4—5 disci 2 mm. longis; pappi 

 sqiiamnlis in radio 2 lanceolatis setaceo-acuminatis, denticellatis liinc 

 illinc incisis, vix 1,5 mm. longis, nunc multo minore intus adjecta, in 

 disco 3 v. 4, raro 5, saepius inaequilongis, longioribus ut in radio; 

 achaeniis vix 3 mm. longis, breviter pilosis. 



Pectis tenuicaulis Urb. Symb. eint. I (1899) p. 468. 



prostrata Gnseh.f Flor. (1861) p. 37 8 (p.p.), — non Cav. 



Hab. in Portorico prope Peüuelas ad vias, prope Guanica in 

 fruticetis litoralibus, prope Saunas de Cabo rojo in graminosis, prope 

 Cabo rojo in pratis maritimis et in collibus ad Joyuda versus, fl. Jan., 

 ^ebr., Sept.: Sintenis n. 561, 56^, 6924, 6987, Stabin. 957; Antigua 

 ifi litoralibus prope St. Jean, m. Dec. flor.: Duss n. 5; Martinique: 

 I^uss n. 970", Hahn s. n., in litoralibus ad Case-Pilote 2-80 m. alt, 

 'ö- Aug. flor. : Duss n. 4078^ 



5- Pectis hiimifusa Sw. annua v. perennans, prostrata v. pro- 

 cunibens, caulibus plerumque numerosis, non v. inferne radicantibus, 

 ^-40 cm. longis, breviter v. brevissime bilineatim pilosis; foliis oblan- 

 «eolatis usque obovatis, 3-12 mm. longis, 2-4 mm. latis, apice rotun- 

 ^ijti^ V. obtusis, raro acutatis, inferne v. ad basin paribus 2-6 setarum 

 *^^'^««s, glandulis crebris in facie inordinate sparsis subtus manifesti- 

 .'^^büs obsitis, margine planis v. recurvis; capitulis in apice ramorum 

 ^^ i-amulorum abbreviatorum solitariis, sessilibus v. usque 10 mm. longe 



