114 CACTEA OF PLANTA FENDLERIAN. 
245. M. PAPYRACANTHA, sp. nov.: ovata, prolifera, aculeis omnibus planis chartaceis flexilibus albis, radialibus 
brevibus 8 centralibus 3-4 multo longioribus, 2-3 superioribus sursum curvatis, singulo inferiore longiore latiore 
deorsum flexo ; floribus centralibus (albidis) ; sepalis 12-16 ovatis acutis integris ; petalis sub-13 lanceolatis acumi- 
natis integris ; stigmatibus 5 suberectis exsertis albidis. — In a valley between the lower hills, near Santa Fé, in loose, 
sandy, though se soil: found only once ; flowering in May. — About 2 inches high and 14 inch in diameter ; 
the tubercles in about 8 spiral rows ; lower ones proliferous ; their shape not well distinguishable in the half-rotten 
specimen before me. ps. silky-white, shining, of the consistency of stiff paper. None of the 8 radiating 
spines (13 or 2 lines long) are directed upwards, but all laterally or downwards; the 2 or 3 central curved [50] 
spines are directed upwards, and 6 to 8 or 9 lines long, the middle ones shorter or wanting. The lower central 
spine is the longest (10 to 14 lines) and broadest, being from 1 to 1} line wide. Flowers pearly white, 12 to 13 lines 
long and 12 to 15 lines in diameter. Lower sepals membranaceous; the upper herbaceous in the middle. Petals 
about two lines wide. 
246. CEREUS VIRIDIFLORUS, Engelmann in Wislizenus’s Report, note 8, sub Echinocereo, Eastern mountains of 
Santa Fé, on sunny, rocky declivities ; flowering in May and June. — I have seen specimens brought from other parts 
of New Mexico of much larger size than those of Fendler or Wislizenus ; some of them 14 inch in diameter and 3 to 4 
inches high, some with stout central spines, others entirely destitute of them 
247. C. coccingus, Engelm. 1. ¢., sub Echinocereo. Higher mountains about Santa Fé; often in large [51] 
clusters of 8 or 15 heads ; flowering in May. — The areole are hardly oval, but almost orbicular, and are dis 
tinguished from those of most related spicied by their large size. — Among a number of plants of this faanity which 
Mr. Fendler sent from Santa Fé in a living state, but which unfortunately were all dead when they came to hand, are 
e specimens which appear to be varieties of this species, namely : — 8. MELANACANTHUS : aculeis radialibus 
10-12 cinereis, centrali longissimo atrofusco porrecto recto seu leviter deorsum curvato.— y. CYLINDRICUS: subsimplex 
cylindricus ; aculeis 8 radialibus, singulo robustiori porrecto. 
C. TRIGLOCHIDIATUS, Engelm. 1. ¢., sub Echinocereo. Higher mountains about Santa Fé ; also in gravelly 
soil on tha lower hills ; flowering in May and June. — To the description given in Wislizenus’s Report I will add 
here that the spines are often somewhat curved ; the ridges are sharp, but the grooves between them very wide and 
shallow ; the areole widely distant from one another (often over 1} inch) ; and the expression “ areolis sparsis,” in 
th 
e character, ought to be changed to areolis distantibus. 
the central one 5 to 6 lines long; the young spines at the apex 
only half as large, although the pits of the globose black seed 
he same size. 
1 After a careful revision of the characters which distin- 
. Those n to me as belonging to New Mexico, 
Chihuahua, and Texas, may be ed into t 
namely: — 
§1. meee Sete 4-10-costato; aculeis radialibus pl. m. por- 
non pectinatis; areolis orbiculatis. 
eke Tuberculis subdistinctis. 
1. C. PROcUMBENS, sp. nov. ined.: tuberculis iSeiaibe: 
aculeis brevibus tenuibus, 5-6 radialibus, 1 centrali. — 
Matamoras. 
teretibus. 
8, oe — 9. Costis 9-11; 
radialibus pices centrali 
io. ©. greesmreeeate Engelm. 1. c. not. 28. Costis 10; aculeis 
radialibus 10-12, centr, 4 rectis. 
££ Rance : ne es, aculeis radialibus 8, 
s 
5. (C, FENDLERI, sp. nov. st yon 9-10, aculeis radialibus 
7, centrali 1 curvato 
* Aculeis — angulatis. 
6. C. ENNEACA gelm. 1. c. not. 46. 
leis radi ries Py pre Zt recto. 
7. (C. TRIGLocHIDIATUS, Engelm. 1. c, not. 9. Costis 6-7; 
aculeis 3-6 pipiens 
Costis 10; acu- 
§ 2. SuLcatr: caule sinubus 10-24 parum incisis sulcato; areo- 
lis pl. m. elongatis; acul. rad. tinato-connatis. 
8. C. pasyacanTHous, Engelm. 19. Septdec 
decim-sulcatus ; aculeis radialibns caipatondl cen- 
tralibus radiales hes eee er —— deflexis. 
C. RUFISPINUS, Engelm. 1. ecim-sulcatus ; 
aculeis rad. adpressis Fic ets, centrali 
1 robusto 
+ 
persion nee ; 
10. C. apusTUs, Engelm ‘Le , 
aculeis rad. peetinatia fers adustis centrali nullo seu 
lrobusto. The last form is 2. ANS (Ee hanvesreib 
radians, Engelm. 1. c. n 
ll. ©. IFLORUS, Engelm. 1. c. not. 8. Tredecim-sulcatus 5 
aculeis rad. pectinatis variegatia, centrali nullo seu 
idw. sub Echinocacto; Engelm. 1. c. 
ereo. Octodecim-23-sulcatus; acu- 
leis radialibus — centralibus 2-5 setae ee 
C. cxspitosus, Engelm. in PI. 18-sul- 
catus; aculeis 
fe 
rad. a centrali walle 
