PHACELIA 



1287 



after anthesis circumscissile above the disk-bearing 

 base and deciduous: drupes 2-5: seeds pendulous; 

 albumen copious. 



Bdldns, Molina (Boldba frdgrans, C. Gay). Attaining 

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

 Chile. B.R. 31:57. 



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

 AmarantAce(e. Nine speciesof slender perennial herbs 

 from Brazil, tomentose or villous, rarely glabrate : Ivs. 

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

 densely tld.: 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 



Pfaffia gnaphaUoides (syn., Gontphrena gnaphalioi- 

 des) has been slightly known to European gardens for 

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

 offered '^ Gomphrena gnaphaUoides, 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 iu the American trade. 

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

 ent as Gomphrena gnaphalioidts 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. 



gnaphaUoides, Mart. [Gomphrena gnaphaliotdes, 

 Vahll. 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- 

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

 at the base; stigma globose. y^^ j^ 



PFElFFEEA, See Ehipsalis. 



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 



PHAC£LIA (Greek, cluster; on account of the 

 crowded flower-clusters of the first described species). 

 Hydrnphylh'tcea'. Annual and perennial plants of the 

 misphere, chiefly North American. The 



1730. A modern 



species and varieties running throu.;h 

 lighter shades to pure white The an 

 nuals are of eis\ cultivation requir 

 ing, to bring them to perfection a soil 

 sunnj 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 : Aiiiinnl or ]..-rHnnial plants, with 

 alternate simple or .■.,i,,i„,iin,l i. n ,^. :,im1 inflorescence 

 in more or less scc.ri i i -|iik.>: c.rolla de- 



ciduous as the capsule _ I ii \ virions shades of 



blue, purple or white nil.. >. nh ..|- \virli..ut interval ap- 

 pendages, these when present in the form of 10 vertical 

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

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

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

 lated or pitted. The plant's are hairy, nearly smooth, or 

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

 the glandular-hairy species has an offensive odor. 



INDEX. 



alba. 4. 5. gL-indulosa, 2. 



campanul.iria. 6. gloxinioitles. .5. 



campanulata, 6. grandifhira, 5. 



eongesta, 3. humilis, 1. 



divarioata, 11. Meiiziesii. 10, 



flmbriata, 9. inultiflora, In. 



POPULAR KEY. 



A. Plants viscid-glandular, at least 

 above. 

 B. Foliage simple. 



c. Base of Ivs. usually cordate. (J. campanularia 

 cc. Base of Ivs. obscurely or not 

 at all cordate. 

 D. Corolla cleft above the mid- 

 dle. 

 E. Fls. bine, with a purple 



or white center 8. viacida 



EE. Fls. blue or while all 



through 5. Whitlavia 



DD. Corolla cleft below the mid- 

 dle: fls. deep violet 7. Parryi 



Orouttiana, 12. 



Wrangelian 



