12 NORTH AMERICAN FI^ORA [V01.UME 22 



Only known from garden material distributed by Alwin Berger, I,a Martola, Italy. Mr. Berber 

 has kindly sent a specimen of this species, which suggests a hybrid, between P. bracleosum and 

 some other species, in which P. bracteosum is the dominant parent. It is, however, quite different 

 from that species and we see no reason why it need not be distinct. Although Mr. Berger has 

 published it as Sedum-Cotyledon-Echeveria-Diotostemon sodalis, it can not properly stand under 

 any of these genera. 



Illustration : Gartenflora 53 : 202, /. 29. 



3. Pachyphytum bracteosum Klotzsch in Otto & Dietr. AUg. 



Gart. 9: 9. 1841. 



Echeveria hracteosa Lindl. & Paxt. Flower Garden 3 : 60,/ 261. 1853. ) 



Cotyledon Pachyphytum Baker, in Saund. Ref. Bot. 1 : sub^/. 59, no. 12. 1869. 

 Echeveria Pachyphytum Morren, Belg. Hortic. 24 : 157, as synonym. .^1874. 



Caulescent, 1-3 dm. high. Leaves oblanceolate to spatulate, thickish, 7-10 cm. long; 

 flowering branches 3-6 dm. long, with a few small leaves;" inflorescence a secundj raceme, 

 12-18-flowered, at first curved, becoming erect ; pedicels short, the lower ones^ spreading, 

 4-6 mm. long; bracts oblong to oval, obtuse, 1.5 cm. long or less; calyx deeply campanu- 

 late, 16-18 mm. long, its lobes oblong-spatulate, unequal ; corolla bright-red, shorter than 

 the cal3rx. 



Type locality : Mexico. 



Distribution : Mexico, definite stations not known. 



Illustrations : I^ink & Otto, Ic. PI. Rar. pi. 43 ; l^indl. loc. cit. ; Bot. Mag. pi. 4951. 



4. Pachyphytum longifolium Rose, sp. nov. 



Caulescent, about 10 cm. high, leafy to the base. Leaves thick but flattened, the 

 lower ones spreading at right angles to the stem, the upper ones erect, 6 cm. long, oblan- 

 ceolate, narrowed from below the apex to the base into a short terete petiole, acute, 

 glaucous, tinged with purple; peduncle about 20cm. long, erect, leafless except just below 

 the inflorescence ; bracts large, in two rows, cordate at base, at first imbricated ; sepals 

 glaucous, very large, unequal, the two outer and lateral ones nearly equal, broadly oblong, 

 15-18 mm. long, obtuse, very glaucous, the upper, inner one and the two lower smaller 

 and narrower, nearly equal, 12-13 mm. long ; corolla 8-9 mm. long, pale without, dark- 

 red within, much shorter than the calyx, the lobes spreading above, broad and rounded at 

 apex but with a small mucro, free nearly to the base. 



Collected by C. A. Purpus in eastern Mexico in 1904 (Rose no. 955). 



This species resembles somewhat in foliage the well known hybrid E. clavifolia, but has more . 

 pointed and longer leaves with a different apex and coloring. In inflorescence it suggests P. 

 bracteosum,^ but the foliage is very different. 



5. Pachyphytum brevifolium Rose, sp. nov. 



Shortly caulescent, 4-5 cm. long in specimens seen. Leaves very short, 1-2 cm. long, 

 doubtlessteretein section, certainly very turgid, obtuse, whitish, perhaps glaucous ; peduncle 

 1-2 cm. long; raceme few-flowered; pedicels 4-5 mm. long; calyx 6 mm. long, its lobes 

 equal, broad and obtuse, nearly hiding the corolla, cleft nearly to the base; corolla-seg- 

 ments broad and thin, free nearly to the base, longer than the stamens ; the 5 stamens alter- 

 nate with petals free to the base, the other 5 borne on the petals and appendaged at base. 



Collected by A. Dug^s near Guanajuata, Mexico, January, 1898 {no. 153). Ty^e in the Gray 

 Herbarium ; fragment in the U. S. National Herbarium. 



6. Pachyphytum uniflorum Rose, Bull. N. Y. Bot. Gard. 3 : 11. 1903. 



Perennial, caulescent, about 2 dm. high, either simple or branched at base, usually 

 erect and stout, woody below. Leaves closely set on upper parts of branches, falling off 

 below, very turgid, but slightly flattened, 3-5 cm. long, only slightly narrowed below, 

 rounded at apex, not glaucous, but pale-green, except near the apex or even reddish 

 throughout; flower-stems slender, erect or nearly so, appearing from the axils of the 

 uppermost leaves of the rosette, pinkish, not glaucous, naked below, but with some 9 

 scattered leaves above, these about 1 cm. long, greenish or purplish, minutely auricled at 

 base ; calyx 5-lobed, 8 mm. long ; lobes ovate, pinkish or greenish, acute ; corolla 12 mm. 

 long, 5 mm. broad, not at all or hardly angled in bud; lobes spreading, free nearly or 



