| Family | OROBANCHACEAE |
| Genus species | Castilleja arachnoidea Greenm. |
| Bibliography | Bot. Gaz. 53: 510 (1912) |
| Native Range | sw. Oregon to California and Nevada |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 1300-3300m |
| Description | arachnose, leaves 2-6cm long, narrowly oblanceolate, pinnatilobate, with 1-2 pairs of segments, floral bracts yellow, pinnatisect, flowers 12mm long, sepals with red apex |
| Size | 6-20cm |
| Color | yellowish |
| Bloom | late summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, uncovered, germ. 1-3 months, 16-21°C cuttings in late summer |
| Synonyms | Castilleja eastwoodiana Pennell Castilleja filifolia Eastw. Castilleja floccosa Pennell ex M.Peck Castilleja payneae Eastw. Castilleja pumicicola Pennell Orthocarpus pilosus var. arachnoideus (Greenm.) Jeps. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (ORE Oregon) 76 Southwestern U.S.A. (CAL California, NEV Nevada) |