APPENDIX. 287 
On page 106, vol. 11, under Hamatocactus setispinus, add to illustrations: Schulz, 
500 Wild Fl. San Antonio pl. 12, as Echinocactus setispinus. 
On page 107, vol. 111, under Strombocactus disciformis, add to illustrations: Remark, 
Kakteenfreund 12, as Echinocactus turbiniformis. 
On page 123, vol. 11, at end of Echinofossulocactus, insert the following: 
Echinocactus tetracentrus Lemaire (Cact. Gen. Nov. Sp. 31. 1839) has not been 
identified. It is to be referred to one of the species of Echinofossulocactus. 
w nenmoeactus barcelona (Cact. Journ. 2: 79, 175, 191) was offered for sale by F. A. 
alton. . 
On page 124, vol. m1, under Ferocactus stainesii, insert: Echinocactus pilosus canescens 
Scheidweiler is listed in Index Bibliographique (286. 1887). 
On page 129, vol. m1, under Ferocactus lecontet, insert: Echinocactus leopoldii (Belg. 
Hort. 25: 132. 1876) was only briefly described when awarded a prize in Belgium. 
Schumann referred it as a synonym of E. cylindraceus, while De Laet, who saw the plant, 
thought it was a form of Ferocactus lecontei. It is misspelled in Volume I. 
Add to illustrations: Wiener Ill. Gart. Zeit. 11: pl. 3, in part; Thomas, Zimmerkultur 
Kakteen 32; Watson, Cact. Cult. ed. 3. f. 26, as Echinocactus lecontet. 
On page 130, vol. m1, under Ferocactus acanthodes, add to illustrations: Thomas, 
Zimmerkultur Kakteen 40, as Echinocactus cylindraceus. 
On page 132, vol. 111, insert: 
lla. Ferocactus johnstonianus Britton and Rose, sp. nov. 
Plants simple, short-cylindric, 6 dm. high or less, up to 3.5 dm. in diameter; ribs 24 to 31, with 
margins undulate; areoles elliptic, rather closely set; spines 20 or more, subulate, very much alike, 
none hooked, slightly spreading and more or less outwardly recurved, 7 cm. long or less, yellow to 
brownish yellow, annulate; flowers including ovary 5 cm. long; perianth-segments narrow, yellowish, 
or the outer ones tinged with red, short-acuminate, the margins slightly erose; filaments yellowish 
below, becoming reddish above; stigma-lobes 8 to 13, flesh-colored; scales on the ovary orbicular ; 
fruit small, 2.5 cm. in diameter, the seed dehiscing by a large pore at the base; seeds angled, black, 
pitted, 2 mm. long; hilum small, circular, depressed, white. 
Collected by Ivan M. Johnston at Angel de la Guardia Island, Lower California 
May 2, 1921 (Nos. 3394, type, and 3395). 
This species is perhaps nearest Ferocactus diguetii but is much smaller and has fewer 
ribs, many more spines in a cluster, and yellow flowers. . 
On page 140, vol. m1, under Ferocactus viridescens, add to illustrations: Bliithende 
Kakteen 3: pl. 177, as Echinocactus viridescens. 
On page 143, vol. m1, under Ferocactus latispinus, add to illustrations: Remark, 
Kakteenfreund 13, as Echinocactus cornigerus flavispinus. 
Also add the note: Cactus cornigereus Mocifio and Sessé (De Candolle, Prodr. 3: 461. 
1828) is given as a synonym of Echinocactus cornigerus. 
On page 144, vol. m1, under Ferocactus hamatacanthus, add to illustrations: Rother, 
Praktischer Leitfaden Kakteen 106, as Echinocactus longihamatus. 
On page 148, vol. 111, under Echinomastus erectocentrus, insert: Mr. C. R. Orcutt has 
called our attention to the fact that in Echinomastus erectocentrus the fruit opens by 
splitting down one side, and in this respect differs from our generic description. This 
character in the description was drawn from a study of the fruits of E. imtertextus, the only 
species in this genus of which we know much about the fruit. He also states that the fruit 
of Astrophytum myriostigma splits open on one side, an observation we had not recorded. 
On page 150, vol. 111, under Echinomastus unguispinus, add to illustrations: Thomas, 
Zimmerkultur Kakteen 31; Schelle, Handb. Kakteenk. 200. f. 132, as Echinocactus ungut- 
spinus. 
