6 WEST AMERICAN SCIENTIST. 
M. compacta Engelmann. 
Original description:—‘Simplex, hemisphaerica, s. depresso-globosa 
tuberculis inthe ovoideo-conicis, sulcatis; areolis ovato- ieccettatin 
} junioribus albo-tomentosis; aculeis omnibus radialibus, 13-16 subsequali- 
bus, robustis, se devatie adpressis, intertextis, albidis, superoribus apice 
fuscis; sulcis tuberculorum axillisque junioribus et vertice tomentosis; 
floribus in vertice congestis; baccis ellipticis perigonio coronatis, viridibus; 
seminibus obovatis, laevibus fulvis. Cosihuiriachi. Plant 2-312’ in diam- 
eter and 1'{-214’ high; tubercles in 13 rows, 4’ high, 6’ wide at base; 
eRe interlocking, cna thereby often deformed ey twisted, stout, 7-10’” 
ong.” —Engelmann in Wisliz. Rep. 105. 1848. 
***“Ploribusin vertice dense lanato centralibus; sepalis (17-19) lanceo- 
- latis acutis integris (rufescentibus, interioribus margine flavis); petalis (28) 
oblongo-lanceolatis mucronatis versus apicem denticulatis (sulphureis); 
stigmatibus we cuspidatis flavicantibus supra stamina Cae — 
exsertis. Flowers at the end of June and beginning of July in St. Lou 
_ Flower-bud dark epee: flower about 15’ long are of the same 
diameter. Petals 6/’ long and 1{’’ wide. Stigmata 2’/ long, cuspidate; 
tag in’ M. vivipara, ae all other species known to me have obtuse stigma- 
ta.”—Engelmann, Boston Jour. Nat. Hist. vi. 196. 1850. 
n, Proc. Am. Acad. iii. 266; Cact. Mex. B. 12, t. 74, f. 2, seeds. 
Wa 
Watson, Bibliographical Index, 402., 
Cactus compactus Kuntze, Rev. Gen. ‘1 260; Coulter, |. c. ili. 113. 
M. CONOIDEA De Candolle. 
Original, description:— —Simple ex, ovata, coiica, axillis junioribus lana- 
tis, mammis ovatis confertis, areola juniorum subtomentosa, aculcis rectis 
ea exterioribus 15-16 radiantibus, centralibus 3-5 erecto-divergentibus 
fuseis longioribus. . Mexico, Coulter, No. 52. Affinis M. arinegiaiene< 
An M. conica Haw? Flores dahaovudnees. fere ex apice caulis orti, pauct 
—DC. Rev. 112. 1820. 
_ “Found only south of the Rio Grande.”—Engelm. Proc. Am. Acad. iii. 
; DRETVUITHELE Labouret, Monogr. Cact. 146 = macromeris. 
has DECLIVIS Dietr. 
: Original description:—‘Humilis, ipphais glaucescenti-virens; axillis 
_sublanatis; mamillis erectis, pyramidatis, tetragonis, areolis minimis vix 
_tomentosis; aculeis marginalibus 14, in orbem dispositis, setaceis, albidis, — 
sprite ipiceque ine ue aculeo centrali unico, porrecto, erassiore, su ubula~ 
to, subbreviore. Habi n Texas.”—Dietr. AGZ. 1850, 0, 235- 
“Centrispin ze. Corpus Christi, Texas.”—Poselger, AGZ. SP losee Saar 
Speciale age laperroors Tene. Am. }. Acad, ae eit : 
