) 
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N 
299] Cactaceae 317 
Matucana Britt. et Rose gen. nov., The Cactaceae III (1922) p. 102. 
Type species: Echinocactus Haynei Otto. 
The genus as known to us consists of one Species, confined to the 
high mountains of Central Peru. 
M. Haynei (Otto) Britton et Rose l. c. p. 102 (= Echinocactus Haynei Otto 
— Cereus Haynei Croucher). — Central Peru. 
' Melocactus Ernesti Vaupel in Monatsschr. Kakteenk. XXX (1920) p. 8. Text- 
fig. u. Tafel. — Brasilien. 
Mila Britton et Rose gen. nov., The Cactaceae III (1922) p. 211. 
Type species: Mila caespitosa Britt. et Rose. 
The generic name is an anagram of Lima, the city in Peru near 
which the plant is found. 
| M. caespitosa Britt. et Rose l. e. p. 211. Pl. XXII. Fig. 2. — Peru (J. N. Rose 
n. 18555). 
Neoabbottia Britt. et Rose gen. nov. ir Smithson. Miscell. Col. LXXII (1921) 
INTER (Bublens269D)7Pr 2: 
A monotypie genus of Hispaniola. Type species: Cactus paniculatus 
Lam. 
N. paniculata (Lam.) Britt. et Rose 1. e. p. 3 (= Cactus paniculatus Lam. 
— Cereus paniculatus DC.). — Port au Prince, Haiti (Abbott et Leonard 
n. 3800, H. M. Pilkington, P. Bartsch n. 221). 
Neobesseya Britt. et Rose gen. nov., The Caectaceae IV (1923) p. 51. 
Type species: Mammillaria missouriensis Sweet. 
ı N. Wissmannii (Hildm.) Britt. et Rose l. ce. p. 52. Textfig. 50 (= Mammillaria 
similis var. robustior Engelm. = M. Nuttallii var. robustior Engelm. = M. 
missouriensis var. robustior S. Wats. — Cactus missouriensis var. robustior 
Coulter = Mammillaria Wissmannii Hildm. — Cactus robustior Small). — 
Texas. 
N. similis (Engelm.) Britt. et Rose. ce. p. 52. Pl. III. Fig. 2 (= Mammillaria 
similis Engelm. = M. similis Engelm. var. caespitosa Engelm. — Echino- 
cactus similis Poselger = Mammillaria Nuttallii var. caespitosa Engelm. 
— M. missouriensis var. caespitosa S. Wats. — Cactus missouriensis var. 
similis Coulter = Mammillaria missouriensis var. similis Schum. —= Cactus 
similis Small = Coryphantha similis Britt. et Rose). — Texas. 
N. missouriensis (Sweet) Britt. et Rose l. ce. p. 53. Pl. XI. Fig. 4 (= Cactus 
mammillaris Nutt. = Mammillaria missouriensis Sweet = M. simplex 
Torrey et Gray = M. Nuttallii Engelm. = M. Nuttallii Engelm. var. borealis 
Engelm. — Cactus missouriensis Ktze. = Mammillaria missouriensis var. 
Nuttallii Schelle = Coryphantha missouriensis Britt. et Rose). — Missouri. 
N. Notesteinii (Britton) Britt. et Rose l. ec. p. 53 (= Mammillaria Notesteinii 
Britt. = Cactus Notesteinii Rydb.). — Montana. 
Neolloydia Britt. et Rose nov. gen. in Bull. Torr. Bot. Club XLIX (1922) p. 251. 
Small, more or less caespitose plants, fibrous-rooted, eylindrie, one- 
jointed, densely spiny, tubercled; tubereles borne on spiraled ribs, grooved 
above; radial spines numerous, widely spreading; central spines one to 
several, much stoutes and longer than the radials; flowers large, pink or 
purple, subcentral from the axils of nascent tubercles, their segments 
widely spreading; fruit compressed-globose, dull colored, thin-walled, 
becoming papery, dry, with few scales or none; seeds globose, black, dull, 
tuberculate-roughened, with a large light basal scar. 
