the lowlands, and the third exclusively the highlands. The last is by 
far the most valuable, he adds, furnishing the _ true caucho blanco 
Colomb The two species of the lowlands are the source of the 
caucho andullo sie or cauchillo, and — the name palo de leche, 
milktree, in common. The highland species was Patrese referred 
by Preuss to 8. verwm, Hemsl. (plate 2647 of this work), and the other 
q . 12), wh 
that they will ettescly prey’ to be forms of one and the same species— 
‘welche beide sich auch j edenfalls nur als Formen einer und derselben 
Art herausstellen w tan. 
Through the kindness of Dr. I. Urban, the Assistant Director of the 
Berlin Botanic Garden, Preuss’s specimens have been sent to 
comparison, and, so far as one can decide from leav es os I ere 
the highland species is correctly referred to my S. verwm , Which is the 
only one besides S. stylare known to me as having persistent ae 
In this connection it Paioald be mentioned that the Bri tish Museum 
specimen cited in the letterpress to plate 2647 as Sapiwm bi glandu- 
losum, var. moritzianum, Muell. Arg., is not that plant, but typical 
S. stylar 
With aid to S. utile and S. decipiens, they are caper the 
same, and the species should bear the former name. It is distinguished 
ute 
“From the foregoing it seems now an established fact that S. stylare 
and S. verwm both extend from Colombia to Ecuador, and Apt the 
latter ial i a superior quality of rubber—W. Borrinc Hemst 
Fig. 1, portion of a branch, bearing stipules and base of petioles ; 2, portion of a 
leaf showing the auricled base of the blade and the two glands o n the petiole; 3, a 
portion of the male part of an inflorescence; 4, one of the ie glands of a brac- 
eole; 5, a frnit : 6, a section of the same ; 7 and 8, seeds, All, cacept fig. 7, 
nlarged. 
