258 The Botanical Gazette. [July,. 
Nutlet 5 x 34’, styles 2' long.—Most nearly related to 7. 
auriculata Meisn. and 7. Arnottiana Meisn., the originals. 
_of which in the Meisner herbarium of Columbia College have © 
been compared. —Jiquilisco, Depart. Usulutdn, Salvador, alt. 
220", Jan. 1893, Dr. W. C. Shannon, U. S. ., NO. 5,064. 
Named for Lieut. M. M. Macomb, U. S. Army, Engineer in 
Charge, Corps no. 1, Intercontinental Railway Commission. 
Piper flavidum C. DC. in Donnell Smith Enum. Pl. Guat.. 
2: 66; (§ III. STEFFENSIA C. DC.); foliis brevissime petiolati s 
lineari-lanceolatis basi zquali acutis apice acute acuminatis 
mucronulatisque utrinque glabris, nervo centrali circiter ad } 
longitudinis nervos utrinque 3 alternos adscendentes mittente, 
petiolo glabro basi ima vaginante, pedunculo glabro petiolum 
Superante, amento florente folii dimidium equante, bractee 
vertice triangulari margine flavide hirsuto, bacca subtetragona 
apice subtiliter flavide hirtella.—Ramuli glabri internodiis 
brevibus, corticis collenchymate continuo zona fibrosa con- 
tinua intus aucto, fasciculis intramedullaribus 2-seriatis. Limbi 
8™ longj 13" lati in sicco firmuli flavicantesque. Petioli ad 
2™ longi. Pedunculi6™™ longi. Amentia florentia 3™ crassa. 
Stamina 4. 
Barranca de Rubelcruz, Depart. Alta Verapaz, Guatemala, 
alt. 2,500", Apr. 1889, J. D. S., no. 1,744. 
Piper Tuerckheimii C. DC. in Donnell Smith Enum. Pl. 
Guat. 2: 96; (§ III. SrEFFENSIA C. DC.); foliis modice petio- 
latis, limbis 3™ supra basin peltatis oblongo-ovatis basi pater 
datis leviterque repandis apice acute acuminatis supra 14 “a 
subtus presertim ad-nervos hirtellis, nervo centrali circiter . 
3 longitudinis nervos utrinque 3 oppositos adscendentes ee 
tente, lateralibus 4-5 e basi solutis tenuibus, amento mers 
folium pluries breviore apice longe mucronato, ee 
quam petiolus pluries breviore, bractee apice ee 
tate pelta triangulari margine hirtella, bacca me 
vertice hirsuta. —Ramuli dense hirtelli. Limbi ad 24 ae 
ad 12™ lati. Petiolj 4.5™ longi hirtelli bas! tS 
Pedunculi 8" longi hirtelli. Amenti pars baccifera 5 
mucro 2 longus hirtellus. Stamina 4. 
Pansamalé forest, Depart. Alta Verapaz, 
3,800", Aug. 1886, von Tiirckheim, no. 1,038. 
. im, Fi 
Piper Santa-rosanum C. DC. in Donnell Smith a oul 
Guat. 2: 96; (§ STEFFENSIA C. DC.); foliis modice pe 
Guatemala, ~ 
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