30 PLANTS BAKERIAN.E. 



Near Montrose, southwestern Colorado, 4 June, and near 

 Grand Junction, 11 June, 1901, C. F. Baker, nn. 14 and 

 106. Species strongly marked both in habit and characters 

 of fruit. 



HYMENOPAPPUS OCHROLEUCUS. Perennial, the stoutish 

 caudex branching, each branch with a tuft of petiolate 

 leaves and a subscapiform though branched and corymbose 

 stem 12 to 18 inches high; herbage white-floccose when 

 very young, the stem and fully developed foliage more or 

 less completely glabrate: principal leaves 4 or 5 inches long, 

 pinnate or more or less completely bipinnate, i. e., some of 

 the segments entire, only those below the middle of the 

 rachis parted into one or more segments, all linear : loosely 

 subcorymbose heads 12 to 20, broadly turbinate, J inch 

 high : corollas whitish or cream-color : palese of the pappus 

 rather many and narrow, little exceeding the silky-villous 

 indument of the achene, and of hardly half the length of 

 the corolla-tube. 



Dry hillsides about Cimarron, Colorado, June, 1901, C. 

 F. Baker, nn. 25 and 269. 



HYMENOPAPPUS PARVULUS. Tufted stems many on a 

 branching perennial caudex, leafy at base only, rather slen- 

 der, 5 to 9 inches high, bearing a few subcorymbose small 

 heads at summit: leaves canescently tomentose, once or 

 twice pinnately parted into linear segments : turbinate heads 

 only 3 or 3 J lines high ; bracts of, involucre oblong-obovate, 

 mainly green and tomeritulose but with light-green subsca- 

 rious margin : corollas greenish-yellow : achenes with short- 

 villous and spreading pubescence; palese of pappus 7 to 9, 

 cuneate-obcordate, longer than the corolla-tube, the mid vein 

 prominent below, the organ otherwise thin-hyaline. 



