1430 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



receptacle naked; achenes linear or prismatic, 2 to 5-ribbed; pappus longer than 

 achene, of 2 to 15 hispidulous bristles and few squamellae, the latter sometimes 

 parted into shorter bristles, or of aristate-tipped squamellae. 

 Heads panicled; leaves merely dentate. 



Leaf blades orbicular or broadly ovate, 0.4 to 2.4 cm. long, half as long as 



the petioles or more 1. H. laphamioides. 



Leaf blades lanceolate or lance-ovate, 2 to 10 mm. long, many times shorter 



than the petioles 2. H. pluriseta. 



Heads solitary on long peduncles; leaves lobed to bipinnatisect. 



Leaves very fleshy, bipinnatisect into truly linear segmerits; squamellae 



dissected to basse into bristles 3. H. crassif olia. 



Leaves less fleshy, lobed to bipinnatisect, the ultimate segments not linear; 

 squamellae not dissected 4. H. fasciculata. 



1. Hofmeisteria laphamioides Rose, Contr. U. S. Nat. Herb. 1: 79. 1890. 

 Hofmeisteria pluriseta laphamioides I. M. Johnston, Proc. Calif. Acad. IV. 



12: 1186. 1924. 



Baja California; type from San Pedro Mdrtir Island. 



Shrub 0.6 meter high, glandular-puberulous; leaves chiefly opposite, the blades 

 suborbicular to deltoid-ovate, 0.4 to 2.4 cm. long and wide, crenate to dentate, 

 obscurely or not at all lobed, shorter than the petioles; heads panicled, white; 

 involucre 8 to 10 mm. high, the outer phyllaries with short, obscurely herbaceous^ 

 sometimes spreading tips; pappus bristles about 10 to 12, sometimes chaffy-dilated 

 at base, with usually as main- alternating squamellae. 

 la. Hofmeisteria laphamioides pauciseta (I. M. Johnston) Blake. 



Hofmeisteria pluriseta pauciseta I. M. Johnston, Proc. Calif. Acad IV. 12: 

 1187. 1924. 



Baja California; type from San Pedro Nolasco Island, Gulf of California. 



Pappus setae 5 to 8, alternating with 5 to 8 oblong squamellae. 



2. Hofmeisteria pluriseta A. Gray in Torr. U. S. Rep. Expl. Miss. Pacif. 



4: Bot. 96. pi. 9. 1857. 



Northern Baja California. Southwestern United States; type from Bill 

 Wihiams Fork, Arizona. 



Shrubby, much branched, glandular-puberulous, about 30 cm. high; leaves 

 opposite or alternate, the blades chiefly lanceolate or lance-ovate, 2 to 10 mm. 

 long, 1 to 4 mm. wide, entire or few-toothed, on petioles about 2.5 cm. long; 

 heads white; involucre 6 to 8 mm. high; longer pappus bristles about 12, ir- 

 regularly alternating with about as many much shorter narrow scarious squa- 

 mellae or bristles. 



3. Hofmeisteria crassifolia S. Wats. Proc. Amer. Acad. 24: 53. 1889. 

 Sonora; type from Guaymas. 



Suffrutescent, glabrous, with stout branches; leaves alternate, the blades 1 to 

 1.5 cm. long, triangular in outline, once or twice ternately parted into linear 

 fleshy lobes; heads pink, broader than high; phyllaries glabrous, with erose 

 margins; longer pappus bristles 5, the squamellae dissected into shorter bristles. 



The flowers are said to be very fragrant. 



4. Hofmeisteria fasciculata (Benth.) Walp. Repert. Bot. 6: 106. 1846-47. 

 Helogyne fasciculata Benth. Bot. Voy. Sulph. 20. pi. 14. 1844. 



Baja California; type from Magdalena Bay. 



Suffruticose or frutescent, essentially glabrous; leaves opposite below, alternate 

 above, the blades deltoid or suborbicular in outline, 1.5 to 4 cm. long and wide, 

 ternately parted or lobed, the lobes again irregularly lobed, the ultimate 

 divisions oblong to triangular; involucre resinou.s-atomiferous; flowers lilac; 

 pappus bristles 2 or 3; squamellae 2 or 3, linear, merely laciniate. 



