Flora of Dominica, Part 2 - Smithsonian Institution Libraries

NUMBER 77 PIPERACEAE 179
1. Leaves palmately veined.
2. Leaves 45 cm long ............
P. amalago
2. Leaves well over 15 cm long ......
P. reticulatum
1. Leaves pinnately veined.
3. Leaf base essentially equal.
4. Leaves glabrous beneath; stamens 3 ... P. aequale
4. Leaves crisped-puberulent on veins beneath; stamens
4 ................... P. glabrescens
3. Leaf base distinctly unequal.
5. Inflorescence curved; petiole c0.5 cm long; leaves
normally scabrous ........... P. aduncum
5. Inflorescence straight; petiole 1-2 cm long: leaves
glabrous (sometimes hirtellous on veins).
6. Fruit round to triangular. ...... P. dilatatum
6. Fruit rectangular . ............ R dussii
Piper aduncum
Piper aduncum Linnaeus, 1753:29.-Howard,
1973a:397.
Shrub or small tree to 6 m; petiole 3-7 mm long;
inflorescence curved.
Neotropics; in Dominica in rainforest around lo00 m: Fon
Pays (Hodge 2843).
The above specimen is not scabrous on the upper surface but
has the distinctive short petioles and strongly curved spikes.
The species is common around Syndicate (DHN!) with
hirtellous rather than scabrous leaves.
Piper aequale
Piper oequale Vahl, 1797. Eclog., 1:4, pl. 3.4tehl6, 1957:617.-Howard,
1973a:398.
Artanthe oequalis (Vahl) Miquel, 1844511.
Piper dominicanum A.C. Candolle in Urban, 1902,3:205.
Doctor bush, malbruk, ma1 estomac grand bois, la feuille
chassk.
Shrub to 3 m; leaves 3.5-11 cm wide; spikes to 5 cm long;
stamens 3.
Neotropics; in Dominica frequent in rainforest 100-1000 m:
Bellevue (Taylor 27). Brush (Nicolson 2159), Deux Branches
(Ernst 1802, Hodge 2985), Fon Pays (Hodge 2844), Hampstead
River (Nicolson 4230, La Chaudiere (Hodge 3600), Layou
River Road (Beard 1457, Cowan 1630), Lisdara (Hodge 2330),
Magua (Stehle 6339), Morne Anglais (Hodge 424), Morne Plat
Pays (Hodge 1699), Petite Macoucherie (Webster 13550, Pont
Casse (Chambers 2539, Wilbur 7536). Providence Valley
(Hodge 2062), Riversdale (Proctor 25791), Salybia (Hodge
3252), South Chiltern (Ernst 1870, Hodge 1440, Sylvania
(Cooper 65, Hodge 3844), Syndicate (Hodge 2728, 2759,
Whitefoord 3873, sine loc. (Bryant 130).
Piper amalago
Piper omologo Linnaeus, 1753 :29.-Howard, 1973a:399.
Enckeo sieberi Miquel, 1844358.
Shrub to 4 m; leaf-blades palmately veined, glabrous, to 14
cm long.
Neotropics; in Dominica in dry woodlands -100 m: Clarke
Hall (Ernst 1263).
This appears to be a new record for Dominica.
Piper dilatatum
Piper dilotoiwn L. Richard, 1792:105.
Piper bredemeyeri J. Jacquin. 1815, 1:125, pl. 84.
Artonthe bredemeyeri (J. Jacquin) Miquel, 1844429.
Doctor bush, feuille ma1 l’estomac.
Shrub or small tree to 3 m; stipules immediately deciduous,
c2 cm long; leaf-blades to 25 cm long, pubescent on veins
below and sometimes above; spikes to 12 cm long; fruit
becoming triangular, giving the floral arrangement an increasingly
spiralled appearance.
Neotropics; common in Dominica in open ateas of secondary
forest 30-1000 m: Bellevue (Wilbur 7932), Clarke Hall
(Ernst 1003, Nicolson 1825, Webster 13185, Wilbur 7372),
Delices (Whitefoord 3751), Indian River mouth (Hodge 3749,
Hatton Garden (Hodge 2950), Lisdara (Hodge 426), Morne
Aux Diables (Wilbur 8058), Mome Brules (Hodge 425), Pointe
Michel (Gillis 8143), Ridgefield (Fennah 25), Salisbury
(Whitefoord 4529), Soufriere (Burch 1342), Springfield (Gillis
8157, Wilbur 7670, Stewart River mouth (Wilbur 8025),
Syndicate (Whitefoord 3541,4243).
Easily confusable with Piper dussii in young stages.
Piper dussii
Piper dussii A.C. Candolle in Urban, 1902, 3:1900.-Howard, 1973a:402.
Piper broodwayi A.C. Candolle in Urban, 1902.3:191.
Shrub or small tree; stipules eventually deliquescing, >2 cm
long; leaf-blades to 25 cm; pubescent on veins below; spikes to
15 cm long; fruit becoming elongately rectangular, giving the
floral arrangement a whorled appearance.
Lesser Antilles; large common weed in Dominica in interior
forests 200-1000 m: Carib Reserve (Hodge 3257), SW of
Castle Bruce (Wilbur 8320), Deux Branches (Chambers 2505,
Hodge 3125), En Haut Jean (Webster 13528). Fon Pays (Hodge
2845), Laudat area (Hodge 1812, Lloyd 236, Smith 10235), LA
Chaudiere (Hodge 3550, Milton (Hodge 2567), Mt. Joy
(Hodge 1293), South Chiltern (Hodge 1492), Sylvania (Hodge
1102, 1311, 1361), Syndicate (Whitefoord 5160), Trois Pitons
(Hodge 1193), sine loc. (Cooper 34).
The Syndicate specimen was annotated as Piper hispidum
Swartz by M.C. Ebbs in 1986.
Piper glabrescens
Piper ghbrescens Mquel) A.C. Candolle in A.P. Candolle, 1869, 16:271.-
Howard, 1973x402.
Piper mcrophyllum Kunth. 1815.1:46, non Swartz.-A.C. Candollein Urban,
1902,3:9.