292 The Philippine Journal of Science 1917 
TABLE 1V.—Distribution, etc.—Continued. 
lative abund-| _ yethod of distribution. | Geographic origin 
> . ° : 
3 Origin, | Distribution. 
= ae 
Species, : 23 . bia 
i=} 3) 2 <= Fz] x 
3|2\S4\ 314 a 2 
318 £5) 5 w| & Bic Bis 
= g £2) b S| b 2/& s|/ S12 
= 3 ot ol a 
i un | Olog a -j a} 2\|2is| eis 3 
Sl hie i aig 8 Si c|/5/ 8/8/81] 8 
plelzie Sieg aisle 2 Ei slei3l a 
plain |alEIBiOl|alS|aid[4) a] 4] a 
Vernonia patula* x Bede Ge 3 Mech eee 
Vernonia cinerea bg ee Be Ga Sess Bee: ee b Ae ess Oe oe es ee 
Vigna lutea pee x BS * 
Vitex parviflora---......-- ns x eae Sh dls acetate! 
Vitex trifolia* x >-4 ee SS pales Mens ee SET She Pee 
Waltheria americana ..--- sean Seen: Oh as FE Shs m elnat se De mx - 
Wedelia biflora x SSeck-e be ois so. ee ea 
Wendlandia | ig. XX ae ees Se, x 1xX 
Wrightia laniti x ba oe ol TS EX: 
Zornia diphylla* Se x x | xX x ee ee 
Wedales.22i pests 96 [128 | 55 | 13 88 |60+26+ 14 [89+| 21 | 60 87 fait 46 |150 | 96 
ANNOTATED LIST OF THE SPECIES OF PTERIDOPHYTES AND SPERMA- 
TOPHYTES FOUND ON VOLCANO ISLAND SINCE THE ERUPTION 
OF TAAL VOLCANO IN 1911 ** 
POLYPODIACEAE 
Acrostichum aureum Linn.* Lagélo. A few plants were observed on 
cliffs in sheltered ravines; none seen near the coast. 
Adiantum caudatum Linn.* Widely scattered on bluffs near the shore. 
Adiantum philippense Linn. Culantrillo. Scattered in shaded ravines. 
Blechnum orientale Linn.* Abundant in some ravines at the northern 
end of the Island. 
Ceropteris calomelanos (Linn.) Und.* Widely distributed on cliffs and 
in ravines, locally abundant; one plant was observed nearly at the 
crater rim, and a few within the crater near the base of the north- 
eastern wall. 
Cheilanthes tenuifolia (Burm. f.) Sw.* Widely scattered on earth banks 
and in ravines, 
Dryopteris parasitica (Linn.) O. Kuntze.* Rare, a few juvenile plants 
in ravines. 
Hemionitis arifolia (Burm, f.) Moore.* Widely scattered in ravines. 
“In this list those species marked with an asterisk are additions to thé 
list of Taal plants published by Gates in 1914; the dagger indicates those 
species recorded by Gates in 1914 that were not observed on Volcano Island 
in 1916-1917, 
