THE PHANEROGAMS OF THE JUAN FERNANDEZ ISLANDS 1 53 



a very distinct species (fig. 17 i). To the same subsection Cercodia (Murr.) 

 Schindl. also belong H. laevis, exalata and pedicellata, all natives of Eastern 

 Australia. 



Key to Subsect. Cercodia. 



I. Sepals tridentate H. pedicellata Schindl. 



II. Sepals entire. 



A. Whole plant more or less scabrid. 



1. Densely scabro-velutinous. Leaves thick, broadly ovate. 



H. cartilaginea Cheesem. 



2. Coarsely scabrid. Leaves thin. 



a. Stem with large, scattered hooks. Teeth of leaves pungent. 



H. exalata F. Mull. 



b. Stem with minute prickles, teeth of leaves not pungent. 



a. Leaves barely scabrous. Stigma papillae few celled. Fruit 

 more than 3 mm long. H. ere eta (Murr.) Schindl. 



p. Leaves very scabrous. Papillae multicellular. Fruit hardly 

 3 mm long. H. asperrima Skottsb. 



B. Whole plant perfectly smooth. 



1. Leaves large, narrow lanceolate H. laevis Schindl. 



2. Leaves ovate or broad lanceolate. 



a. Fruit large, generally over 4 mm. 



a. Narrow ovoid, distincly costate. H. masatierrana Skottsb. 

 p. Broad ovoid, not costate. H. masafuerana Skottsb. 



b. Fruit small, c. 3 mm long. H. Colensoi Skottsb. 



*83. H. asperrima nov. spec. — Syn. H. erecta var. scabra, SKOTTS- 

 BERG, Stud. — Fig. 18. 



Suffrutex semimetralis, glaber sed scaberrimus, fere a basi opposite ramo- 

 sus. Rami tetragoni longitudinaliter ac conspicue 4-lineati, lineis elevatis valde 

 scabris. Folia opposita, superiora saepe alternantia, internodiis sat longis sepa- 

 rata, tenuia, laete — obscure viridia subtus paulo pallidiora, ubique asperrima, 

 ovata vel ovato-lanceolata, basi cuneato-rotundata, longe (10 — 18 mm vel inter- 

 dum ultra) petiolata, lamina argute serrata dentibus distincte apiculatis utrinque 

 12 — 14, 30—50 mm longa et 10 — 22 mm lata, superiora sensim minora, pro 

 magnitudine longe petiolata, anguste lanceolata — ovato-rhomboidea, parcius 

 dentata — subintegra. Inflorescentia spicata foliosa, e dichasiis bracteolatis 3 — 7- 

 floris composita. Flores brevissime pedicellati (Va mm), omnino scabri. Ovarium 

 tetragono-ovoideum, interdum mox alatum, 1,2 — 1,5 mm longum et 1 mm latum. 

 Sepala 4 acute triangulata, minute denticulata, 0,8—0 9 mm longa. Petaia 4 

 navicularia, carinata et in carina scabra, breviter unguiculata, 2 — 2,5 mm longa, 

 viridia— alborosea. Stamina 8 filamentis tenuissimis c. 1,5 mm longis, antheris flavis 

 dorso ± rubescentibus, 1 — 1,5 mm longis. Styli 4, ad 0,8 mm longi, stigmata alba 

 vel rosea papillis longis multicellularibus. Fructusscaber, viridis— obscure violaceus 

 tetragono ovoideus pyriformis exalatus vel 4-alatus, cum sepalis persistentibus 

 2,7—3 mm longus et 2 mm latus, inter margines alarum autem ad 4 mm metiens. 



