CACTEZ OF PLANTA LINDHEIMERIANS, 121 
OPUNTIA. [206] 
§ 1. APPLANATA. 
- MACRORHIZA, ni. sp.: prostrata; articulis obovato-orbiculatis planiusculis ; pulvillis setis fuscis et seepe aculeis 
singulis binisve instructis ; aculeis teretibus validis porrectis s. paulo deflexis basi apiceque fuscis ceterum albidis cum 
adventitio inferiore graciliore reflexo seepe deficiente; floribus sulphureis basi intus rubellis ; ovario sepalis subulatis 
deciduis 13 in axillis setulas fuscas brevissimas gerentibus stipato ; sepalis interioribus 15-18 subulatis et (internis) 
ovatis acuminato-cuspidatis ; petalis 8 sepala superantibus late obovato-spathulatis obtusis cuspidatis eroso-denticulatis; 
stigmatibus 5 obtusis, adpressis, stamina numerosa equantibus; bacca subpulposa clavata glabrata ; seminibus mar- 
ginatis. — Naked, sterile, rocky places on the Upper Guadaloupe. Flowers (in St. Louis) in June. Root a large and 
fleshy tuber, sometimes 2 or 3 inches in diameter; joints 3-4 inches long, about 23-3} wide, hardly attenuate at the 
ase. Leaves subulate, about 5 lines long; areole 7-1 inch distant, more crowded toward the base and on the edges ; 
spines (often wanting) 1 inch long, the smaller 4-6 lines long. Flower 3 inches in diameter ; ovary 1} inch long; 
etals 1 inch wide, 14 inch long, pale yellow, red at the base. Fruit 14 inches long; the strongly margined seeds 
comparatively few, 24 lines in camels ter.—I1 have found the same plant in similar nitions in western Arkansas ; and 
it is possible that it may be one of Nuttall’s new — Ae mesacantha, O. cespitosa, or O. humifusa) of which I 
cannot find a description, — Nearly related to O. vulga 
O. INTERMEDIA, Salm. The species mentioned in Plant. Lindh. 1. c. No. 1, has since produced abundant flowers 
and fruit, and proves to be the above plant. It is near O. vulgaris, but more erect or ascending ; the joints much 
larger ; flowers larger (44-5 inches in diameter) ; ovary more slender, 2-2} inches long, with 20-25 subulate 
sepals; petals obcordate ; stigma 5-lobed, erect ; fruit 24 inches long, 6-8 lines wide at the top, deeply umbili- [207] 
cate. Lindheimer’s specimens are from Iodaatey; south of the Beas, I believe I have seen the same species 
near Natchitoches, on Red River. 
. LINDHEIMERI, n. sp.: erecta, robusta; caule lignoso ; articulis (magnis) ellipticis basi attenuatis planis ; 
pulvillis remotis ad margines confertioribus griseo-tomentosis, setis flavidis aculeisque paucis instructis 1-3 compressis 
validis deflexis varie divergentibus stramineis, nunc cum 1-2 aculeis adventitiis gracilioribus; flore . . . bacca clavata 
elongata subpulposa glabrata ; seminibus late marginatis. — About New Braunfels. Plant erect, often 6-8 feet high ; 
stems terete ligneous, sometimes 6 inches in diameter, with gray bark, and very light, spongy w Larger joints 
9-12 inches long, 5-7 broad. Areolz 14-2 inches distant on old joints ; bristles on them 1-3 lines long. Spines all 
pale yellow, much compressed, indistinctly annulated, 4-1 inch long, various; the 3 longer spines, or the 1 longer, 
with 1 or 2 shorter spines e fruit which Lindheimer has sent as belonging to this species resembles very much 
that of O. vulgaris, 2-24 ‘nciée long, slender, with a deep umbilicus, very different from that of the following species. 
Seeds 2-2} lines in diameter, not numerous. Young plants grown from this seed have the same compressed spines, 
but are brown at the base ; the lower areole produce no spines, but a quantity of long, coarse hair. — I add here the 
following species, though not properly belonging to the flora of Texas, because I suspect that it is also found at the 
mouth of the Rio Grande, within the limits of Texas. There, and especially on the barren sand islands at the Brazos, 
near Point Isabel, the St. Louis Volunteers found large and impenetrable thickets formed by an Opuntia with large 
joints, covered with almost globose fruits, with innumerable small seeds and a very luscious deep red pulp. The fruit 
are before me, but unfortunately I did not obtain a living specimen. 
O. Ena@eLtmMannt, Salm mss.: erecta; articulis orbiculato-obovatis planiusculis ; pulvillis remotis ad [208] 
margines confertior! bes griseo-tomentosis setis flavidis aculeisque paucis compressis ancipitibus instructis, 1-4 
validis spe ineequalibus plus minus deflexis varie divergentibus basi rufis, ceterum stramineis cum adventitio infimo 
graciliore albido sepe deficiente ; fl. . . . bacca ovata subglobosa late umbilicata pulvillis pluribus tomentosis stipata ; 
seminibus minoribus anguste maryind atis .— From El Paso to Chihuahua, indigenous and cultivated (Dr. Wislizenus). 
No doubt also on the Texan side of the Rio del Norte.— Erect, 5-6 feet high. Upper and larger older joints 
12 inches long by 9 broad. Areole 14-2 inches distant ; bristles 2-6 lines long; spines 1-1? inches long, very stout. 
Fruit 14-1} inches long, about 14 in diameter; umbiligus large (10-12 lines), flat ; pulvilli on the fruit about 5 lines 
distant. Seeds very numerous, about half as large as 0. vulgaris, 14-1j lines in Ahieeter: of an irregular shape. — 
Near 0. Dillenii and O. polyantha, as Prince Salm informs me. 
§ 2. CyLINDRICa. 
TESCENS, Engelm. in Plant. Lindh. 1. c. under 0. fragilis, from which it widely differs, stands near 
0. penttea Salm (raised from Mexican seeds), but is sufficiently distinct (Salm). Fruit by the abortion of the seeds 
very often sterile. — I had occasion to observe this species in blossom, and add the description of the flowers : 
oribus ex ramis anni prioris provenientibus ; ovario clavato basi 5-gono sepalis subulatis sub-13 stipato ; mealis 
interioribus 8 lanceolatis ex viridi sulphureis ; petalis 8 — cuspidatis (sulphureis s. subvirescentibus) ; 
