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Ln 



MONVILI^EA. 



23 



I 



from a plant in the same 



York 



from 



photograph taken in 1917 by Dr 

 2. Monvillea insularis (Hemsley). 



Ceretis insularis Hemsley, Voyage of Challenger Bot. i^: i6. 1884. 



Creeping or clambering, forming a dense thicket, much branched; branches nearly cyHndric 

 2.5 to 3 cm. m diameter, 6-angled; spines 12 to 15, unequal, spreading, terete, yellow; flowers de- 

 scribed as yellow, 12.5 cm, long; ovary and flower-tube bearing only a few minute scales but no 

 spines or hairs; flower-tube very slr--^—- — ----^^ ' ' . • ^- > . 



stigm 



gments 



Michael's Mount 



Distribution: Known onlv from 



S. latitude. 



which 



IS 



most 



it has never been in cultivation. 



exists. It 

 informed. 



Illustration: Voyage of Challenger Bot. i^rpl. 14, as Cereus insularis. 

 , Figure 21 is copied from the plate above cited, 



t 



* - 



3. Monvillea spegazzinii (Weber). 



Cereus spegazzinii Weber, Monatsschr. 



Kaktecnk. 9: 102. 1899. 

 Cereus anisitsii Schumann, Alonatsschr. 



Kakteenk. 9: 185. 1899. 



Erect, strongly 3-angled or ribbed, 

 bluish green, more or less spotted with 

 white; ribs strongly undulate or serrate; 

 spines on young branches brown to black, 

 3 a,t an areole, 5 mm. long, with broad 

 conic bases; on old wood 6 at an areole, of 

 these 5 radial, i central; bud and flower 

 rigid and erect, but after an thesis abruptly 

 reflexed; flowers 11 to 12 cm. long, narrow, 

 funnelform; outer perianth-segments pur- 

 plish, the inner nearly white, serrate 

 above, acuminate. 



r 



Type locality: Near Resistencia, 

 Chaco Territory, Argentina. - 



D«/ri6w^ion; Paraguay and north- 

 eastern Argentina. 



Cereus marmoratus Zeissold (Cat. 

 1899), unpublished, is referred by 



(M 



Kakteenk. 18; 



131. 1908) to Cereus anisitsii; Giirke 



(M 



Kakteenk. 16: 146. 



1906) also refers Cereus lindenzweig- 



name 



Illustrations: Monatsschr. Kak 



Fig. 22. — Monvillea spegazzinii. 



teenk. 12: 193; Schumann, Gesamtb. Kakteen Nachtr. f. 5; Schelle, Handb. Kakteenk. f. 

 31; Rev- Hort. Beige 40: after 184*, as Cereus spegazzinii; Bltihende Kakteen 2: pi. 107, 

 as Cereus anisitsii. 



Figure 22 is from a photograph of the type specimen given to Dr. Rose by Dr. Spcgazzini. 



*In the Revue de L'Horticulteur for 1914 was published a luunbcr of plates, mostly of cacti grown by Frantz 

 de Laet. These plates are not numbered and we have indicated their position by the page they follow. Most of 

 them were reproduced in De Lact's Catalogue General. 



.-J 



