FROM MISSOURI TO SANTA FE AND NORTHERN MEXICO. 53 
Bouvardia,® which is remarkably distinct from all the other Mexican species of this genus by 
its smoothness; an Lcheveria perhaps identical with the Californian Z. cespitosa, DC.; several 
Gerania, which appear to be undescribed, one of them with white flowers; an Hryn- 
gium, with the lowest leaves most elegantly pectinated, and the upper ones pal- [107 (23) ] 
mately divided ; a Zinnia,® intermediate between Zinnia multiflora and Z. elegans, 
and which last season grew finely near St. Louis from seeds picked from these specimens. Many 
other Composite have not yet been examined; a Centaurea may be found to be distinct from 
C. Americana, so far the only American species of that genus, which is so extensively diffused in 
the Old World. 
Leaving aside several Dalew, Lupini, Giliw, a Gentiana, Buchnera, Castilleia, a number of 
Labiate, Graminee, and many others, I will only mention a few more, which I had time to study 
more closely. First of all, the beautiful and delicate Heuchera sanguinea,™ probably the most 
southern, and certainly the most ornamental species of that genus, Next in beauty comes the 
foliis pedatifide 5-7-partitis, laciniis incisis, segmentis linearibus, acutis, divaricatis ; floribus laxe paniculato-racemosis ; 
bracteis subulatis ; floribus longe pedicellatis ; calcare subulato, curvato sepala paulo superante ; sepalis 2 exterioribus 
acutis, 3 interioribus obtugissimis ; petalis brevioribus acuminatis; ovariis glaberrimis. 
On the Bufa, a porphyry rock near Cosihuiriachi, 8,000 feet high, in flower in September. Stem 2 to 2} feet 
high, slender, glabrous, glaucous; flowers sparse, with the spur 1} inch long, beautifully blue, on the outside slightly 
puberulent, 
% BouvARDIA GLABERRIMA, i. sp.: glaberrima, caule erecto terete ; foliis ternatis, breviter petiolatis, ovato-lan- 
ceolatis, utrinque acuminatis, patentibus s. reflexis; cyma composita, foliacea; calycis segmentis tubum bis superanti- 
bus; corolla calyce quintuplo s, sexuplo longiore, extus glabriuscula, intus parce barbata. 
Cosihuiriachi, flowers September. Perennial ; 2 feet high, leaves 3 to 3} inches long, 8 to 10 lines wide; flowers 
bright crimson, 12 to 15 lines long. Apparently one of the largest species of the genus; leaves entirely glabrous, not 
revolute on the margin. 
3 ERYNGIUM HETEROPHYLLUM, n. sp.: glaberrimum, caule erecto; foliis radicalibus oblanceolato-linearibus, 
acutis, penni-nerviis, serratis, serraturis cartilagineo-marginatis, aristatis; foliis caulinis inferioribus serrato-pinnatifidis, 
superioribus palmati-partitis, segmentis linearibus incisis; foliis involucralibus 10-13 linearibus acuminatis, spinoso 
bidentatis, rarius integris, capitulum ovale longe superantibus; bracteis ceruleis subulatis flores superantibus, in- 
terioribus longioribus. 
Common in valleys about Cosihuiriachi; flowers September. Biennial, 1} to 2 feet high; radical leaves 2 inches 
long, 2 lines wide; involucral leaves 12 to 15 lines long, 1 line wide; heads about 4 lines in diameter. Near two 
other Mexican species, EZ, Carlin, Lar., and E. Henkei, Presl., distinguished from the first by the larger number of 
linear, not ovate serrate involucral leaves ; from the other also by the larger number of those leaves which are gener- 
ally toothed, not entire, 
88 ZINNIA INTERMEDIA, n. sp.: caule erecto, ramoso, parce adpresse piloso; foliis scabris, inferioribus ovatis, basi 
obtusis, superioribus subsessilibus ovato-cordatis, acutis; pedunculo apice vix incrassato ; involucri ovati squamis mar- 
ginatis obtusis; paleis cristato-fimbriatis; radii ligulis oblanceolatis, extus scabriusculis, ciliatis; acheniis radii 
linearibus, disci 1-aristatis. 
Common about Cosihuiriachi, flowers in September. Annual, 1 to 2 feet high; leaves 1 inch long, 6 to 8 lines 
wide ; flowering heads 18 to 20 lines in diameter. The cultivated specimens grew 3 feet high ; leaves 3 inches long 
and half as wide; heads hemispherical, larger, ligule less acute. Differs from Z. multiflora by the less inflated 
peduncle, the broader and shorter leaves, the cristate palew ; from Z. elegans, which the shape of the leaves and of 
the chaff much resembles, by the shape of the achenia. I may state here that in all the cultivated as well as native 
specimens of Z. multiflora the palew are not entire, but fimbriate at the obtuse apex. 
* HEUCHERA SANGUINEA, n. sp.: petiolis patenti pilosis ; foliis sinu latissimo cordatis, orbiculatis, 5-7-lobatis, 
lobis incisis duplicatim dentatis, ciliatis ; junioribus pilosis ; scapo nudo, infra parce piloso, supra cum pedicellis calyci- 
busque colorato glanduloso; floribus laxe-paniculatis campanulatis; calycis lobis ovatis obtusis, subequalibus; peta- 
lis lineari-spathulatis persistentibus, cum staminibus pistillisque inclasis. 
Porphyry mountains of Llanos, flowers in September. Scape 8 to 12 inches high ; upper part, together with the 
flowers, bright scarlet ; enclosed petals inserted below the throat of the calyx; stamens still lower; filaments equal 
in length to the orbicular cordate red anthers. 
