PLOEA OF NOKTH--W*i;STERN STEXICO. 277 
Sectio VII. Frutices scoparii ramosi erecti articuLiti ; foliis deciduis exstlpulatis oppositia terula aut 
quatcruis ; floribus axillaribua cymosis, involucria margine 5-fldis, lobis membranaceis coloratis, 
basi calloso-patellatia. 
103. Euphorbia recta, Klotzsch (sp. nov.) ; fruticosa, scoparia, ramosa ; ramis strictis sulcato- 
striatis glabris articulatis; internodiis scgqui- ad tripolllcaribus ; foliis cauliuis ternatim vcrticillatis 
caducis adscendcutibus, cicatricibus latis angustatis scutellato-subscmiluuatis, margine tumcscciiti-cal- 
losis integerrimis ; cymis axillaribus abbrcviatis multifloris bractcatis ; bracteis ternatim vcrticillatis 
deciduis lineari-subulatis ; involucris campanulatis piibcrulis 5-fidiSj lobis orbiculato-ovatis candidis, 
basi lute scent i-callosisj gestivatione imbricatis; floribus masculis nuracrosls, antheris didyuiis globosis; 
germinibus triangularibus glabris, stylis usque ad basim partitis, stigmatibus bifidis, lobis tcretibus 
obtusis. Sierra Madre, on the road from Durango to Tcpic. 
A shrub from 5 to 7 feet high, of which I have only a flowering branch, which ia about 15 inches long, 
simple, straight, and about as thick as a goose-quill. The upper iutemodia are 1^- to 2, the lower about 3 
inches long. There are no leaves on the specimen, nor on the sheet of paper in which it is contained ; they 
must have dropped ofi* when it was collected, perhaps even earlier. [There were no leaves on this shrub 
when I gathered the specimens ; their flowers seem to come out after the leaves have dropped off. — Bcrthold 
Seemann.'] 
Sectio VIII- Frutices scoparii ramosi esarticulati inermes sparsim-foliosi ; floribus glome rat o-aggrogut is 
axUlaribuSj iuvolucris margine 5-fidis, lobis membranaccis coloratis^ basi calloao-patcllatis. 
104. Euphorbia occulta^ Klotzsch (sp. nov.) ; fruticosa, ramosa; ramis teretibus strictis albican- 
tihus glabris Isevibus inarticulatis ; foliis alternis deciduis lincaribus acntis recurvis rigidisj supra sul- 
catisj subtus nervo prominente instructis ; glomerulis axilhiribusj involucro campaiiulato fuscescente- 
viridi puberuloj margine 5-lobo, lobis cordato-rotundatis albicantibus membranaceis recurvis^ basi cou- 
coloribus calloso-patcllatisj aestivatione imbricatis ; floribus masculis numcrosis, antheris didymis glo- 
bosis ; germinibus solitariis glabris stipitatis nutantibus triangularibus ; stylis tribus patcntibus UF^quc 
ad basim partitis ; stigmatibus intcgris incrassatis. Sierra Madre, 
A shrub from 1 to 3 feet high ; leaves eight lines long, and half a line broad- 
PoiNSETTiAj Graham in Ediiib. New Phil. Journ. March, 183G, — Bot. Mag. t. 3493- 
105. PoiNSETTiA pulcherrima, Grah. I.e. — Euphorbia pulcherrima, AVilld. Herb. n. 9259. No- 
men vcrnacul. "Catalina" et "Noche buena." Common in damp shady localities on the western 
declivity of the Sierra Madre to an elevation of about 1000 feet ; cultivated extensively for ornamental 
purposes in the gardens of Durango. 
" An extract from its bracts, mixed with lime-juice, gives an excelleut scarlet dye. In the city of Du- 
rango the plant is cultivated in almost every garden, under the name of ' Noche buena,' because it flowers 
about Christmas ('Noche buena' of the Spaniards). I have been told there existed in some part of Mexico 
a variety of this species with white instead of scarlet bracts, but I have never seen it." — BerthoU Seemann. 
106. PoiNSETTiA ^ec?«HC«/a/a, Klotzsch (sp. nov.) ; fruticosa, ramosa, pnbcscenti-hispida ; ra- 
mulis teretibus erectis pedunculisque hirsntis ; foliis difformibus alternis margine cartilagineis, subtus 
pallidc-viridibus hirtis, supra c viridi-purpurascentibus margineque hispidis, aliis pandurBeformibus, aliis 
lanccolatisyapicc altcrnantibus ; inflorcsccntia terminali lougi-pcdunculata in capitulum cougesta quadri- 
bracteata, bracteis sanguineo-puniceis ovatis, margine rcmote-serratis, subtus sparsim hirtis albicanti- 
