82 



THE CACTACKAE. 



Figure 119 is from a photograph taken by Frank E. Lutz at Ensenada, near Guanica 

 Porto Rico, in 19 15; figure 120 shows a fruit collected by Dr. Britton and Dr. Shafer a 

 Guanica in 1913 ; figure 121 shows a flower from a plant at the same locaHty. 



L 

 X 



PUBLISHED SPECIES. PERHAPS OF LEPTOCEREUS. 



CerEus paniculatus De Candolle, Prodr. 3: 466. 1828. 



Cac/M5 />c«icM/a/M5 Lamarck, Encyl. 1 : 540. 1783- 



This has long been in doubt and is known only from imperfect description and illus 

 tration. Lamarck states that it is from Santo Domingo, in a region called cul-de-sac, an( 



L 



+ 

 L 



Burmann's olate 102 of Plumier 



Lept 



\ 



i860. 



wemgarUanus. 



I <^\ 11. EULYCHNIA Plnlippi, Fl. Atac. 23. 



or procumbent and ascending, green cacti, usually with many branches, the 

 branches parallel-ribbed, armed with spines; perianth white to pinkish, withering and persisting 

 on the ovary; flowers single at the areoles, opening during both day and night, short and broad for 



Stout, erect 



group, with 



filaments very short, covenng 

 somewhat acid, hardly edible; 



erm (according to Mr 



/ 



Type species: £m/ jc/ima fcrm^Zora Philippi. 



This genus as here defined contains 4 species found along the coast and central valleys 

 of the provinces of Aconcagua, Coquimbo, Atacama, Antofagasta, and Tarapaca, Chile. 



To this group, treated as a' subgenus of Cereus by Mr. Berger, has been referred a num- 

 ber of anomalous species which we place elsewhere ; they are similar to this genus in the 

 fact that they have very short flower-tubes, but in habit, fruit, and other characters they 

 are quitedistinct. These species^will be discussed in this work under other genera . 



brevifl 



Rudolph 



acida 



from 



associated 



1. Eulychnia spinibarbis (Otto). 



Cereus spinibarbis Otto in Pfeiffer, Enum. Cact. 86. 1837, 



Cereus panoplaeatus Monville, Hort. Univ. i: 220. 1840. 



Eulychnia breviflora Philippi, Fl. Atac. 24. i860. 



Echinocereus spinibarbis Schumann, Monatsschr. Kakteenk. 5: 124. 1895. 



Cereus breviflorus Schumann, Gesamtb. Kakteen Nachtr. 23. 1903. 



Stems 2 to 4 meters high, much branched; branches 7.5 cm. in diameter; ribs 12 or 13; spines 

 about 20 from an areole, usually 18 mm. long, but the longest one at times 15 cm. long; flowers 3 

 to 5 cm. long; scales on ovary and flower small, bearing in their axils long brown wool; outer perianth- 

 segments short, acuminate; inner perianth-segments white to pinkish, oblong, 2 cm. long, acute; 

 style short, 1.5 cm. long including the stigma-lobes; scales on the ovary 

 with lone brown wool. 



small, their axils filled 



Type locality: Near Coquimbo, Chile. 



Distribution: Along the coast of the province of Coquimbo, Chile 



H r- 



'^ 



b _ ■ 



- 1 



- h 



' ^ 



i*l 



and other desert plants. In many regions they form the dominant feature in the vegetation. 

 At least two species are commonly used for fuel, and one {E. acida) is used for hedge fences. 



The generic name is from the Greek, signifying a candlestick. ' 



Key to Species. 



Areoles of the ovary and perianth-tube without stiff bristles. 



Areoles of the ovary and perianth-tube with long wool. , . t • / 



Wool chestnut-brown; areoles of the joints small, little felted i. E. spinibarois 



Wool white; areoles of the joints large, approximate, densely felted 2. E. iquiquensts 



Areoles of the ovary and perianth-tube with very short wool 3. -E. acida 



Areoles of the ovary and perianth-tube with stiff brownish bristles and short wool 4. E. castanea 



J '- ' 



S ^^'^ 



-f _■ 



^ ^ 



3 



, h 



"I 



« 



V 



4 









