PEUMUS 



after anthes-is circumscissile above the disk-bearing 

 ba>t- and deciduous: drupes 2-5: seeds pendulous; 

 albumen copious. 



B61dus, Molina (Boldba fragrans, C. Gay). Attaining 

 20 ft.: Ivs. opposite, leathery, very rough and warty. 

 Chile. B.R. 31:57. 



PFAFFIA (C. II. Pfaff, 1774-1852, German chemist). 

 AnKirnnttlfece. Nine species of slender perennial herbs 

 from Brazil, tomentose or villou.s, rarely glabi-ate: Ivs. 

 opposite, sessile or nearly so, entire: heads or spikes 

 dcnscly-fld. : bracts and bractlets transparent: fls. usu- 

 ally in solitary, long-peduncled heads, bracteate and 

 with 2 bractlets; perianth 5-parted; staminal tube long, 

 5-cut to the middle, the anther-bearing teeth ciliate 

 at the margin: stigma discoid or head-like, entire or 

 2-lobed. 



Pfaffia gnaphalioides (syn., Gomphrena gnaphalioi- 

 des) has been slightly known to European gardens for 

 a good many years. In 1899, Peter Henderson & Co. 

 offered Gomphrena gnaphalioides^, or the Trailing Am- 

 aranth," with the remark that it is a desirable trailer 

 for covering embankments and rocks, thrives on poor, 

 dry soil and has white fls. like small clover blossoms. 

 Because of the failure of the seed crop, however, the 

 plant did not become established in the American trade. 

 The probability is that the plant in the trade at pres- 

 ent as Gomphrena gnaphalioides is incorrectly named. 

 In catalogues the trade plant is figured with the flower- 

 heads in clusters of three and on short stalks, while 

 DeCandolle describes the heads as solitary and long- 

 stalked. Moreover, the true plant has always been re- 

 garded as a stove plant in Europe, and at best it could 

 be treated in America only as a tender annual and not 

 as a hardy and permanent subject. 



gnaphalioides, Mart. (Gomphrena gnaphalioides , 

 Vahl). Stems subshrubby below : Ivs. lanceolate, 10-15 

 lines long, 2-4 lines wide, soft, ashy gray above, woolly 

 beneath : peduncles 5-7 in. long : heads globose, 6-9 

 lines across : bracts unequal, ovate, mucronate, scar- 

 tous, the lower one villous, lateral ones longer, glabrous 

 at the base; stigma globose. \y\ ]\j t 



PFElFFEKA. See Rhipsalis. 



PHACELIA 



1287 



genus includes the old genera "Whitlavia, Eutoca, Mi- 

 crogenetes, Cosmanthus, and several others. About 50 

 species exist in North America, the region west of the 

 Mississippi furnishing by far the greater number. The 

 flowers are mainly of a handsome blue or violet, many 



1729. Petunia hybrida (X 

 A double form. 



PHACELIA (Greek, cluster; on account of the 

 crowded flower-clusters of the first described species). 

 Hydrophyllacece. Annual and perennial plants of the 

 western hemisphere, chiefly North American. The 



1730. A modern race of fringed Petunia. ' 



CX&) 



species and varieties running through 

 lighter shades to pure white. The an- 

 nuals are of easy cultivation, requir- 

 ing, to bring them to perfection, a soil 

 warm, sunny, and not too moist. 

 Some species like a sandy soil, others 

 a firmer clay. Some are erect and give 

 the best effects when planted thickly; 

 others are more spreading and hence require consider- 

 able space. In height they vary from only a few inches 

 to several feet. The flowers are borne on more or less 

 recurved racemes that straighten as the flowering pro- 

 ceeds. They vary from an inch long in some species to 

 less than a quarter of an inch in others. In addition to 

 those described below there are many other beautiful 

 species of Phacelia, annuals as well as perennials, that 

 should be in the trade. 



Generic description: Annual or perennial plants, with 

 alternate simple or compound leaves, and inflorescence 

 in more or less scorpioid cymes or spikes: corolla de- 

 ciduous as the capsule enlarges, with various shades of 

 blue, purple or white; tube with or without interval ap- 

 pendages, these when present in the form of 10 vertical 

 folds or projections, adnate to or free from the bases of 

 the filaments: calyx-lobes commonly narrow, often en- 

 larged upwards, especially in fruit: seed-coats reticu- 

 lated or pitted. The plants are hairy, nearly smooth, or 

 glandular, in whole or in part. The herbage of some of 

 the glandular-hairy species has an offensive odor. 



alba, 4, 5. 

 campanularia, 6. 

 campanulata, 6. 

 congesta, 3. 

 divaricata, 11. 

 fimbriata, 9. 



INDEX. 



glandulosa, 2. 

 gloxinioides, 5. 

 grandiflora, 5. 

 humilis, 1. 

 Menziesii, 10. 

 multiflora, 10. 



POPULAR KEY. 



Orcuttiana, 12. 

 Parryi, 7. 

 tanaeetifolia, 4. 

 viscida, 8. 

 Whitlavia, 5. 

 Wrangeliana, 11. 



A. Plants viscid-glandular, at least 



above. 

 B. Foliage simple. 



c. Base of Ivs. usually cordate. 6. campanularia 

 cc. Base of Ivs. obscurely or not 



at all cordate. 



D. Corolla cleft above the mid- 

 dle. 

 E. Fls. blue, with a purple 



or white center 8. viscida 



EE. Fls. blue or white all 



through 5. Whitlavia 



DD. Corolla cleft below the mid- 

 dle: fls. deep violet 7. Parryi 



