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the lowest leaves most elegantly pectinated, and the upper ones palmately 
divided; a Zinnia , 38 intermediate between Zinnia multiflora and Z. 
elegans, and which last season grew finely near St. Louis from seeds 
picked from these specimens. Many other Corrtpositae 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 DaUae, Licpini, Giliae, a Gentians Buchneva, 
Castilleia , a number of Labiatne , Gramineae, and many others, I will 
only mention a fe v more, which I had time to study more closely. First 
of ail, the beautiful and delicate Heuchera shnguinea ., 89 probably the 
most southern, and certainly the most ornamental species of that genus. 
JNext in beauty comes the bright-flowered Pentstemon coccinens ;* 9 Lobe- 
JNear two other Mexican species, E. Carlin ae, Lar., and E. Haenkei, 
Fresh, 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 generally toothed, not entire. 
3 8 Zinnia intermedia , n. sp., caule erecto, ramoso, parce ad press 
so; foil is scabris, inferioribus ovatis, basi obtusis, superioribus subsessili- 
bus ovato-cordatis, acutis; pedunculo apice vix incrassato; involncri ovati 
squamis mar«inatis obtusis; paleis crisiato fimbriatis; radii ligulis oblan- 
ceolatis, extus scabriusculis, ciliatis; aciieiiiis radii linearibus, disci 1- 
aristatis. 
< -ommon about Cosihuiriachi, flowers in September. Annual, 1 to 2 feet 
high; leaves l 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, ligulae less 
acute. Differs from Z. multiflora by the less inflated peduncle, the 
broader and shorter leaves, the cristate paleae; from Z. elegans , to which 
the shape of the leaves and of the chaff much resembles, by the shape of 
the achenia. I may state here that in A1J tHp cultivated as well as native 
specimens of Z. multiflora jthe paleae are not entire, but fimbriate at the 
obtuse apex. 
39 Heuchera sanguinea , n. sp., petiolis patenti pilosis; foliis sinu latis* 
simo cordatis, orbiculatis, 5-7-lobatis, lobis incisis duplicatim dentatis, 
ciliatis; juniorjbus pilosis; scapo nudo, infra parce piloso, supra cum 
pedicellis calycibusque colorato glanduloso; floribus laxe/campanulatis; 
calycis lobis ovatis obtusis, subaequalibus; peialis lineari-spathulatis per- 
sistentibus, cum staminibus pistillisque inclusis. 
Porphyry mountains of Llanos, flowers in September. Scape 8 to 12 
inches high; upper part, together with the flowers, bright scarlet; en¬ 
closed petals inserted below the throat of the calyx; stamens still lower; 
filaments equal in' 1 length to the orbicular cordate red anthers. 
40 Pentstemon coccrneus, n. sp., glaberrimus, glaucus, foliis infimis 
obovatis, caulinis inferioribus oblongo linearibus, superioribus linearibus 
rninutis; racemo laxo, pedicellis oppositis, elongatis, 2-bracteatis, 1-floris ; 
calycis glandulosi segmentis ovatis; corollae tubo superne dilatato, limbo 
bilabiato, labio superiore ad medium bilobo; anthens divaricatis, filamen-, 
to sterili glabro, apice dilatato; capsula acuminata. 
Llanos, flowers in September and October. Stem 1 to 2 feet high, nearly 
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