•,•-. 



y- A 



A 





^. - " 



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sr 



:* 



^ 



PliRESKIA. 



17 



most formidable protection. In the grazing regions of the country and along railways 

 where wire fencmg is employed, the trunks and larger branches arc used for posts and 



time 



somewhat for m 



Although the wood, especially the branches, has httle strength or endurance, it is used 



iking hanging baskets for orchids. It is known everywhere as guamacho, 

 by Weber as the specific name for the plant, 

 d 10 are from photoijraphs taken bv Mr. H. Pittier at C,ir;'irn<; Vonn^itr^ln 



m 1913. 



10. Pereskia colombiana sp. nov. 



A tree, 6 to 1 1 meters high, or sometimes smaller and slinib-Iike; main stem covered with clus- 

 •l^- Z^^^^^ spmes, 2.5 to 7 cm. long; branches glabrous, either bearing spines or naked, covered 

 with hght-brown bark; areolcs small, woolly; leaves oblong to obliquely 

 orbicular, short-petiolcd, unarmed at base, often broad above, usually 

 acute, probably fleshy, glabrous, 4 em. long or less; flowers bright yel- 

 low, opening about midday, borne on the old wood, solitary, sessile, 4 cm. 

 broad; ovary covered with small ovate, acute leaves, these hairy in the 

 axils; sepals oblong, obtuse, about i cm. long, entire on the margins; 

 stamens numerous; fruit not known. 



Colombia 



Herbert H. Smith at low altitudes near 



the same loeahty by Justin 

 Pennell in 1918 (No. 4765). 



1844, and by Francis W. 



Mr. Smith remarks 



Figure 



bloom 



from a drawing of an herbarium specimen 



Herbert H. Smith at Ronda. Santa Marta 



tampicana 



1898. 



Shrub; branches often without spines or the spines several, needle 

 Hke, tjlack, 2 to 3 cm. long; areoles globular, appearing as knobs along the 

 stem; leaves about 5 cm. long, pctioled; flowers 2.5 cm. long; petals entire, 

 rose-colored. 



Type locality: Near Tampico, 

 Distribution: Eastern Mexico 



I' 



Mexico 



1 1. — Pereskia colom- 

 biana. 



X0.5. 



tampicana is not well known and has been reported only from Tamp 



In 



E. Palmer m 

 1912 Dr. 



examined 



small specimens 



herbarium of the Royal Botanical Garden 

 and not a Pereskiopsis. 



Pereskia rosea A. Dietrich (Allg. Gartenz. 19: 153 



in the 



Gesamtb. Kakteen 



1898) 



Op 



come from Mexico 



Schumann refers to it in a note under P. tampicana. Here he also 



7/ 



much older than P. tampicana, and should either of them 



Both these specific names 



name 



12. Pereskia bleo (HBK.) De Candolle, Prodr. 3: 475. 1828. 



Cactus hleo Humboldt, Bonpland, and Kunth, Nov. Gen. et Sp. 6: 69. 1823. 

 Pereskia panamensis Weber. Diet. Hort. Bois 739. 189S, 



A tree, sometimes 7 meters high ; trunk 10 cm. in diameter or less, when old becoming naked, but 

 young shoots often bear large fascicles of spines (sometimes 25 or more) ; young branches red, leafy, 

 its spines in fascicles of 5 and 6, but young shoots often bear but i to 4, black, acicular, up to 2.5 cm! 



