826 COMPOSITAE. 



PSILACTIS. 



2. PS. COULTERI A. Gray 1. c. — Subglabra: foliis (ramealibus) rigidiuscuiis pierisque 

 dentatis; involucri squarais 3 — 4-seriatini imbricalis inaequalibus obiongo-Ianceolalis 

 obtusiusculis vix glandulosis; pappo corolla disci tertia parle breviore, e selis circ. 

 40 valde inaequalibus. — Crescit in Mexico. 



2343/i. PERITYIiE Bnth. 

 (Wlprs. Repert. VL 125.) 



1, P. ACMELLA Harv. ft Gray, Plant. Fendl. 77. adnot. — Subglabra: caulibus elongatis 

 decurabeniibus; ramulis involucrisque minute glandulosis; foliis plerisque allernis ova- 

 tis trifldis, superiorlbus interdum hastato-trilobis, lobis lanceolatis oblongisve aculis; 

 receptaculo plano; ligulis oblongis discum vix superantibus; appendicibus slyli oblongo- 

 ianceolatis acutis ; pappi aristis 2^ scabris tubum corollae subaequantibus, achaenio ob- 

 longo marginibus valde hlspido-ciliato dimidlo hre\iorih\is.— Spilanthes pseudo-acmella 

 Hook. & Arn. Bot. Beecli, 150? — California. 



2, P. LEPTOGLOSSA Harv. & Gray l. c. — Suffruticosa? spithamaea cinereo -puberula : 

 foliis alternis (an semper?) ovatis subcordatis crenato-incisis denticulatis; receptaculo 

 convexo; iigulis linearibus elongatis (cum tubo flliformi Va unc. longis); appendicibus 

 styli fl. herm. attenuato-filiformibus; pappo uniaristato , arista nuda corolla disci gra- 

 cillima breviore, achaenio lineari-oblongo marginibus breviter hispido-oiliato longiore. 

 — California. 



3, P. PLUMIGERA Harv. Sc Gray I. c. — Ramosissima viscido - puberula : foliis (rameali- 

 bus) parvis alternis seu oppositis ovatis oblongisve denticulatis; receptaculo convexo; 

 ligulis oblongis involucrum excedentibus; styli ramis fl. hermaph. elongatis in appen- 

 dicem brevem vix dilatatam obtusam desinentibus; achaenio oblongo, marginibus villo- 

 sissimo, pilis squamellis pappi longioribus, arista unica corollam disci aequante, achae- 

 nium plus duplo superante, apicem versus parce plumosa. — California. 



2345. CAIiOTIS R. Br. 



(DC. Prodr. V. 302. VIL 275. — Wlprs. Repert. VI. 125.) 



1. C. SCAPIGERA Hook. in Mitchell, Journal of tropical Australia p. 75. adn. — Stoloni- 

 fera glaberrima: foliis omnibus radicalibus lineari- spathulatis; scapo nudo monoce- 

 phalo; achaenii aristis robustis subulatis, retrorsum pilosis, apice rectis vel uncinatis 

 — Crescit in Australia orientali tropica. 



2347/i. IIIPL.O)STEI.I»IA A. Gray. 



(A. Gray, Plant. Fendl. 72. adn.) 



Capitulura mulliflorum hemisphaericum radiatum heterochromum, 

 floribus radii uniserialibus foemineis, disci tubulosis hermaphroditis, 

 omnibus fertilibus. Involucrum pkiriseriale, squamis lineari-cblongis 

 coriaceo-chartaceis subcarinatis, margine scariosis, apice fimbriato- 

 ciliatis, regulariter imbricatis appressis, exterioribus sensim bi^evioribus. 

 Receptaculum planum nudum. Ligulae circ. 20 elongatae. Coroilae disci 

 (plus quam 60) e tubo gracih infundibuliformes, limbo quinquelobo. Styli 

 rami complanati, appendice triangulari acutiuscula terminati. Achaenia oL- 

 longa compressa hirtella, radii subtrinervia, disci binervia, nervis mar- 

 ginahbus. Pappus conformis duplex e paleis coriaceis 5 oblongis eroso- 



