516 DESCRIPTIONS IN GRAY’S PLANT WRIGHTIAN. 
TALINUM AURANTIACUM, Engelm. Pl. Lindh. l. c. Common throughout Southwestern Texas. Also found [14] 
by Dr. Wislizenus in the Jornada del Muerto. 
33. T. AURANTIACUM, 8. ANGUSTISSIMUM : foliis anguste linearibus ; pedunculis ad basin vel vix supra basin 
articulatis ; sepalis magis membranaceis quam petala brevioribus; stylo stamina equante ovario vix longiore. — 
Bottoms of Live Oak Creek, and on the San Felipe; Jul 
34. T. sanMEeNTOSUM, Engelm. Pl. Lindh. 1. c. On the Liana; June. Root thick, tuberous. To characters 
add: Bracteolis subulatis. 
35. T. SPATHULATUM, n. sp.: caule erecto gracili folioso; foliis carnosis oblanceolato- spathulatis breviter 
cuspidatis in petiolum sensim attenuatis ; cymulis axillaribus bracteatis laxe trifloris versus caulis apicem in paniculam 
dispositis ; bracteis ovatis cuspidatis minutis deciduis; floribus longe pedicellatis [corolla ex. cl. Wright flava] ; 
seminibus nigris nitentibus tuberculatis. — Mountains of New Wexies. east of the Rio Grande; August. Well distin- 
guished from the nearly related 7’. sarmentosum by the narrower, spatulate leaves (2-3 inches long, and half an inch 
or more wide), by the short ovate bracts, the larger capsule, and the very much larger seeds, which are much more 
distinctly tuberculate. 
NOTES ON LINUM. 
LINUM, L. (Dehiscence of the capsule only, or at least most readily, through the false dissepiments!) [25] 
Sect, ADENOLINUM. 
1, LryvM PERENNE, Linn. Collected for the first time in Mexico by Dr. Gregg, in dry valleys near a 
Sept. 1848. Secondary dissepiments incomplete, with capillary fibres on their margins, much as in L. Bootti 
Sect. Lrxopsis. 
§ 1. Capsules 5-valved ; the secondary dissepiments more or less membranaceous, but entire; styles united to above 
the middle, mostly to near the apex. 
. L. MULTICAULE, Hook. — L, hudsonioides, Planch., is a mere variety. Styles mostly united almost to the 
Capsule obtuse, as long as or a little shorter than the calyx ; the secondary dissepiments entirely membranaceous, 
falling away to let the seed escape. Texas, from the coast (Houston and Victoria) to the West (N. Braunfels, Pier- 
denales, sag, — Sepals persistent, even after the fall of the capsule, while in all other species they fall off when the 
fruit ri 
3. ARISTATUM, Engelm. in Pl. Wisl. p. 101. Leaves sometimes with stipular glands. False dissepiments for 
the greater part membranaceous, with a narrow falciform cartilagineous part exteriorly and inferiorly. — Between El 
Paso and Chihuahua, Wright’s No. 72 is a smaller form of this. species ; - sepals rather less aristate ; the flowers 
and capsules a little smaller, and with a large and perpendicular ligneous roo 
4. L. r1etpuM, Pursh. Glaucous ; stem simple below ; leaves, at — the upper ones, glandular-serrate, with- 
out stipular glands; pedicels thickened at the end, forming a cup-shaped exterior caliculus; styles almost entirely 
united ; filaments subulate from a gular hase; capsule not seen. (My specimens were collected by Geyer, on the 
Upper ‘Miseodrl.} 
Var. PUBERULUM. Glaucous ; stems very much branched from the base, puberulent, or rarely glabrate; leaves 
erect, linear, 1-nerved, mucronate, a pair of stipular glands at their base ; pedicels equalling or exceeding the calyx; 
sepals glandulose-ciliate, the exterior 3-nerved ; filaments with an ovate-triangular base, toothless; styles united to the 
summit ; capsule rather shorter than the stpals, ovate, acutish, 5-valved, the secondary dissepiments almost entirely 
membranaceous. — Santa Fé, to the Cimarron River, Fendler, No. 85. Prof. Gray in Pl. Fendl. considered it a variety 
of L. Berlandieri, and in Pl. Lindh. p. 157, as belonging to L. rigidum. From the former it is distinguished by the 
glaucous appearance, the linear leaves, and especially hin small capsule with the almost entirely membranaceous 
secondary dissepiments. From the latter, the absence of the caliculate cup below the calyx, the smaller flowers, and 
the entire leaves appear to separate it. [Dr. Engelmann inclined to consider this a distinct species; but the capsules 
of true L. rigidum, in the Hookerian herbarium, show precisely the same structure, and others rightly named ‘‘ L. 
rigidum” by Planchon have manifest stipular glands, although he has not noticed them; so that it would be wrong, 
I think, to separate the present plant specifically. It is evident that the stipular glands do not furnish reliable specific 
distinctions. — A. G.] 
5. L. Bertanprert, Hook. Green ; leaves lanceolate or lanceolate-linear; stipular glands often present, but not 
always ; filaments Janceolate-subulate at the base; capsules globose-ovate, subacute, 5-valved, the secondary 
saree partly (the upper and inner half) membranaceous. — From Galveston to the Brazos, N. Braunfels, [26] 
Pierdenales, Lindheimer, &c. On the San Pedro River, Wright. — — The latter approaches a slightly 
so form, with narrower “ed more rigid leaves, which occurs on the Cimarron (Wislizenus, Fendler, mixed 
