378 COMPOSITE. Aclinolepis. 



1. Not woolly, but mostly glandular, diffuse, ivith opposite pinnately parted or the 

 radical twice pinnately dissected leaves, their segments linear and attenuate : 

 heads on slender peduncles, and with rather large and numerous (yelloiv) rays: 

 involucre rather broad : receptacle acutely conical : anther-appendages oblong. 

 PTILOMERIS. (Ptilomeris, Nutt. Hymenoxys, Oxypappus, Torr. & Gray.) 



As yet, it is uncertain whether the following are mere varieties of one, or whether they retain 

 their small distinctions uniformly. If at length reduced to one the name A. coronaria should be 

 preferred, Nuttall's name (probably suggested by a likeness to Chrysanthemum coronarium) being 

 a year or so earlier than Hymenoxys Californica, of Hooker. 



* Minutely glandular-pubescent: rays 10 to 15, elongated-oblong: involucral scales 



oblong-lanceolate : receptacle pubescent. 



1. A. coronaria, Gray, 1. c. Diffusely branching slender stems a foot long: 

 pappus of 10 (or 8 to 12) lanceolate or oblong denticulate scales, all tapering into 

 awns a little shorter than the disk-corollas, or in the ray fewer and some of them 

 awnless. Ptilomeris coronaria & P. aristata, Nutt. in Trans. Amer. Phil. Soc. vii. 

 382. Short ia Californica, Nutt. in garden catalogues. Hymenoxys Californica, 

 Hook. Bot. Mag. t. 3828 ; Torr. & Gray, Fl. ii. 280, with var. coronaria. 



Near San Diego, Nuttall. So far as we know collected only by him, and in cultivation from 

 his seeds. Described as " very glabrous" in the Botanical Magazine, doubtless incorrectly. Rays 

 nearly half an inch long, usually 12. 



2. A. anthemoides, Gray. Leaves perhaps more copiously divided and glan- 

 dular, and heads rather smaller : pappus none. Ptilomeris (Ptilopsis) anthemoides, 

 Nutt. 1. c. Hymenoxys calva, Torr. & Gray, 1. c. 



With the preceding, Nuttall. Also towards Julian City, Bolander. 



3. A. mutica, Gray, 1. c. Like the foregoing : pappus of 6 to 8 quadrate-oblong 

 scales, erose-laciniate at the truncate or very obtuse summit, shorter than the proper 

 tube of the corolla, occasionally one or two of them slightly awned. Ptilomeris 

 mutica, Nutt. 1. c. Hymenoxys mutica, Torr. & Gray, 1. c. 



Near San Diego, Nuttall ; by whom only it has yet been collected. 



* * More or less pubescent, but hardly if at all glandular : rays 6 to 8, shorter, oval : 



involucral scales ovate : receptacle glabrous. 



4. A. tenella, Gray, 1. c. Smaller than the foregoing : the heads and leaves 

 about half the size of those of A. coronaria : lobes of the latter shorter and blunter 

 as well as fewer : pappus of 5 to 8 short quadrate scales, which are fimbriate at the 

 broad summit, or some of them occasionally bearing a delicate short awn. Ptilo- 

 meris tenella, & P. ajjinis, Nutt. PI. Gamb. 1 73 ; the latter a form with some of the 

 pappus aAvned. 



Near Los Angeles, Gambel. Rays 2 lines long. 



2. Floccose-woolly : most of the leaves alternate: involucre narrow: rays rather few, 

 obovate : receptacle convex or obtusely conical : akenes minutely hairy or some- 

 times glabrous : pappus of 8 to 10 or more scales or squamellce. True 

 ACTINOLEPIS. 



* Heads small and sessile or leafy-bracted, with only 5 (or " 3 to 5 ") yelloiv rays : 

 receptacle merely convex : anther-appendages ovate-lanceolate : pappus of subulate or 

 almost setiform scales, commonly ivanting in the disk-Jlowers. (Actinolepis, DC.) 



5. A. multicaulis, DC. Seldom a span high, diffusely branched from the 

 base, the white wool below somewhat deciduous with age : leaves cuneate or spatu- 

 late with a long tapering base, the summit obtusely 3-toothed or 3-lobed : scales 

 of the pappus 10 to 15, unequal, very slender, usually (but not always) wanting in 

 all the disk-flowers. Hook. Ic. t. 325 ; Bot. Mex. Bound, t. 33. 



