162 LXX. COMPOSIT. 
flat, dry, separate, conspicuous scales in single rows (in Ursinia with a few 
slender bristles as an inner pappus). (Gen. 45-49.) 
1. Receptacles without palez. e Sohal aqua- 
tie herb). . . 45. CADISOCUS. 
2. Receptacles bearing palew ‘among the disk- 
flowers. 
Leaves opposite, linear. Heads conglomerate, 
anwoliered’). 0i)..5 0.6 joni sle cl je MR Ole AO ORDIORAS 
Leaves alternate. Heads separate. 
Raysfemale. Pappus of 2-3 unequal scales. 47. CALLILEPIS. 
Rays neuter. Pappus of 5 obovate, obtuse 
scales. Achenes witha silky tuft at base, 
narrow. . . . 48. SPHENOGYNE. 
Rays neuter. Pappus of 5 “obovate scales, 
and 5 inner slender bristles. Achenes ob- 
ovate, quite glabrous . . . . . . . 49. URSINIA. 
Subtribe 3. ANTHEMIDE®. Leaves rarely opposite. Heads discoid or 
radiate. Receptacles nude or bearing palew. Anthers wholly without 
tails, blunt at base. Pappus either 0, or coroniform, or consisting of a few 
minute scales or jointed hairs. (Gen. 50-75.) 
1. Receptacles bearing paleze between the flowers. 
Heads radiate. Achenes glabrous. Leaves 
opposite . . 2) t08 sis Gay OO UO REETAE 
Heads more or less radiate. Achenes woolly. 
Disk-flowers perfect. Leaves pinnatisect . 51. LastosPERMUM. 
Disk-flowers male. Leaves simple or 3-fid. 
Rigid shrubs. . ee cue) os 37D) HRIOCEBHALUS: 
Heads homogamous, discoid. Pappus either 
minutely scaly, or of a few short hairs, or 0. 74. ATHANASIA. 
2. Receptacles nude, not bearing paleze among the 
flowers. 
* Heads discoid. 
Corolla of disk-flowers 5-toothed. 
Heads homogamous (all flowers similar 
and perfect). 
Pappus O (shrubs or half-shrubs). 
Corolla glabrous. 
Leaves linear, entire. . . 73. STILPNOPHYTUM. 
Leaves cuneate, 3-5- lobed or 
toothed . . . . 66, PENTZIA. 
Corolla glandular. ‘Achenes terete. 68. ADENOSOLEN. 
Corolla pubescent. Achenes scabrid. 60. BRACHYMERIS. 
Pappus membranous, oblique, ear- 
shaped. 
Small shrubs or undershrubs. . . 66. PENTZIA. 
Annuals, with pinnatisect leaves . 61. Ma?RIcARIA. 
Pappus of several small, equal scales . 67, MARASMODES. 
Heads heterogamous; marginal flowers 
filiform, female. 
Disk-flowers, male, with abortive ova- 
IPSs me saddles (00s, ELEPBERS 
Disk- flowers fertile, ovuliferous . . » 64. ARTEMISIA. 
Corolla of disk-flowers 4-toothed. 
Tube of corolla not flattened or winged. 
