308 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Chenowith, Suksdorf 2568; without locality, Vasey 264; Blue Mountains, Horner 277; Piper 
2329: Wenache Mountains, Cotton 1301; Hell Roaring River, Cotton 1519; Wenache, 
Whited 96, 41, 3,104, and June 28, 1896; near Wenache, Whited 120; Wenache, Whited 1105. 
ZONAL DistRiBUTION: Arid Transition. 
28a. Lupinus laxiflorus, forma theiochrous Robinson, forma nov. 
Corolla sulphur-yellow. 
SPECIMENS EXAMINED: Near top of ridge, northern slope of Rattlesnake Mountains, 
Yakima County, Washington, J. 8. Cotton, July 16, 1900. 
Lupinus HOLOSERICEUS Nutt, LUPINUS ARGENTEUS Pursh, LuPINUS PARVIFLORUS Nutt. 
These three names are included in Suksdorf’s list, but we have been unable to find good 
evidence that the species occur in the State. 
ULEX. 
1. Ulex europaeus L. Sp. Pl. 2: 741. 1753. Gorse. Furze. 
Type Locauity: “Habitat in Anglia, Gallia, Brabantia.” 
This plant is well established on Alki Point near Seattle, and has also been reported from 
other localities. 
MELILOTUS. 
Flowers white. ..........-.-------- 0-2-2202 22-2 ee ee ee ee ee eee eee ees 1. M. albus. 
Flowers yellow. ........-----.----. 2-22-2222 0-22-22 eee ee ee eee eee 2. M. officinalis. 
1. Melilotus albus Desr. iin Lam. Eneyc. 4: 63. 1797. SWEET CLOVER. 
Tyre Locaity: Siberia. 
SPECIMENS EXAMINED: North Yakima, Watt, August, 1895; Egbert Springs, Sandberg & 
Leiberg 398. 
2. Melilotus officinalis (L.) Lam. FI. Fr. 2: 594. 1778. YELLOW MELILOT. 
Trifolium melilotus officinalis L. Sp. Pl. 2: 765. 1753. 
Tyree LocaLity: Europe. 
SPECIMENS EXAMINED: Okanogan, Griffiths & Cotton 345. 
TRIFOLIUM. C.Lovenr. 
Leaflets 5 to 7; flowers large, 2 to 3 cm. long ...-...--.--------- 1. T. macrocephalum. 
Leaflets 3; flowers smaller. 
Heads not subtended by an involucre. 
Perennials; with thick roots or creeping rootstocks. 
Heads on axillary peduncles; introduced. 
Flowers white; stems creeping......-.....-.--- 10. T. repens. 
Flowers pink; stems procumbent..........-.-.- 11. T. hybridum. 
Heads on terminal peduncles; native. 
Leaves glabrous; corolla red_....... 2.2.2. -.--- 2. T. douglasir. 
Leaves pubescent. 
Calyx-teeth plumose. 
Heads ovoid, becoming oblong........- 3. T. plumosum. 
Heads globose. 
Lobes of the calyx subequal, 3 to 4 
times as long as the tube _....-- 4. T. eriocephalum. 
Lobes of the calyx unequal, the 
anterior twice as long as the calyx 
tube and the other lobes.........  5.°7'. areuatum. 
