Blake — Descriptions of New Spermatophytes 61 
a considerable collection of the plants of Surinam gathered by 
Dr. J. A. Samuels in 1916 and recently determined at the Gray 
Herbarium. The specimen in question was collected in the Forest 
of Zandery, May 31, 1916. 
URTICACEAE 
Myriocarpa paniculata, sp. nov. Arbor 6—10-metralis dioica. 
Rami novelli sparsim lepidoto-hispidi fusco-brunnei vetustiores 
subglabrati, internodiis 0.8-3.6 em. longis. Folia alterna obovata 
vel ovali-obovata apice subabrupte acuminata (acumine 6-15 mm. 
longo) basi cuneata obscurissime repando-denticulata glabra (pilis 
paucissimis in costa et venis majoribus exceptis) dense cysto- 
lithigera (cystolithis lineari-ellipticis circa bases pilorum decidu- 
orum obscure stellatis) 3-nervia et parum venosa 7-15 em. longa 
2.2-5.2 em. lata, in petiolis nudis 8-16 mm. longis insidentia; stip- 
ulae obscurae. Paniculae (9 solum visae) axillares solitariae usque 
ad 4.5 cm. longae 4 em. diam. (pedunculo 7-12 mm. longo incluso), 
ramis primariis ea. 6-8 patentibus vel divergentibus, secondariis 
paucis, floribus fasciculatis, fasciculis sparsis. Perianthium ? 
paene ad basin 4-partitum ad 0.4 mm. longum subaequale, seg- 
mentis duobus in angulis stipitis ovatis subacutis duobus inter 
angulas lanceolatis. Achenium (immaturum) complanatum 2.7 | 
mm. longum (stigmate obliquo villoso-papilloso 0.8 mm. longo 
incluso) in margine hispidum, stipite 1 mm. longo complanato, 
corpore ovato in stylum 0.7 mm. longum desinente. Ovulum 
erectum. — NicaraGua: slender tree, 20-30 feet high, with very 
openly branched top, occasional in deep forests, Volcan Mombacho, 
20 Feb. 1903, C. F. Baker 2489 (type in Gray Herb.). — The 
present species, although a good Myriocarpa in all other characters, 
is unique in the genus by reason of its short truly paniculate in- 
florescence. The 4-parted perigonium, more distinct here than 
is general in the genus, seems to fairly merit the name of perianth. 
In these two features M. paniculata differs so strongly from. its 
congeners that it may properly be taken as the type of a distinct 
group, to be called, in allusion to the strikingly developed al- 
though not absolutely characteristic stipe of the achene, — 
Myriocarpa Benth. sect. Podocnide. — Inflorescentia vere 
paniculata. Perianthium definitum 4-partitum. — Species unica 
