A straggling shrub with spiny glossy dark green leaves, which change to beautiful tints of scarlets and yellows during midsummer and autumn. Frequent in the Rockies in woods; flowering in June. PAPAVERACEÆ _Poppy Family_ Herbs with milky or coloured sap and alternate leaves or the upper rarely opposite, flowers perfect, regular or irregular; sepals 2, rarely 3 or 4, soon falling off; petals 4—6 or rarely more, folded together, often wrinkled; stamens numerous. [Illustration: _a_ Delphinium Menziesii DC. Blue Larkspur. _b_ Lithophragma parviflora (Hook.) Nutt. Lithophragma. (¾ Nat.)] [Sidenote: =Capnodes aureum= (Willd.) Kuntze. _Golden Corydalis._] Smooth, 4—12 inches long, diffusely branching. Leaves all but the uppermost petioled, finely cut into oblong-obovate or wedge-shaped segments. Flowers numerous in an oblong head, bright golden yellow, nearly half an inch long; spur ½ the length of the body of the corolla, outer petals keeled, not crested; pods spreading or pendulose, torulose; seeds obtuse, margined, shining, obscurely ridged. Frequent throughout the Rockies in open ground at the lower altitudes where it has been recently burned or cleared; flowering during most of the summer. BRASSICACEÆ _Mustard Family_ Herbs, rarely somewhat woody, with watery acrid juice, alternate leaves and racemose or corymbose white, yellow, or pink flowers; sepals and petals 4; stamens 6, rarely fewer; pistil 1, consisting of 2 united carpels. Pods short; silicles. Pod compressed parallel to the partition. =Draba.= Pod compressed contrary to the partition, ovate; flowers white. =Thlaspi.= Pod inflated, obcordate; flowers yellow. =Physaria.= Pods elongated; siliques. Pod compressed parallel to the partition. Valves nerveless; flowers white. =Cardamine.= Valves 1-nerved; flowers white or pink. =Arabis.= Pods terete, not at all compressed. Pods 1½ inches long or more. Flowers yellow, stigma 2-lobed. =Erysimum.= Pods less than 1½ inches long. Leaves grey with fine hairs; flowers white. =Smelowskia.= Leaves not grey-hairy; flowers yellow or white. Pubescence of simple hairs. =Sisymbrium.= Pubescence of forked hairs. Leaves pinnate or pinnatifid; flowers yellow. =Sophia.= Leaves entire or nearly so; flowers white. =Braya.= Smooth throughout. Leaves pinnate or pinnatifid; flowers white. =Roripa.= [Illustration: Draba oligosperma Hook. (Nat.) Whitlow-Grass.]