Eichhornia crassipes (Mart.)
Solms in DC, Monog. Phan. 4 (1883) 523; --Merr., EPFP 1 (1922) 200;
--Backer, Fl. Males. ser. 1, 4 (1951) 255, Fig. 2 & 3. Native to N
South America. Introduced in the tropics and subtropics worldwide. In
the Philippines since around 1912 as an ornamental, now an ubiquitous
weed clogging water courses all over the country. Water hyacinth.
Invasive species (CABI 2017). Photos
Monochoria hastata (L.) Solms
in DC. Monog. Phan. 4 (1883) 523; --Merr., Fl. Manila (1912) 141;
EPFP 1 (1922) 200; --Backer, Fl. Males. ser. 1, 4 (1951) 258, Fig. 1.
Tropical SE Asia and throughout Malesia, not yet recorded from the
Moluccas and Lesser Sunda Isls.
var. hastata. Throughout
the Philippines at low and medium elevation; common in open
wetlands, swamps, etc.
Monochoria vaginalis
(Burm.f.) C.Presl, Rel. Haenk. 1 (1827) 128 ex Kunth, Enum. 4
(1843) 134; --Merr., Fl. Manila (1912) 141; EPFP 1 (1922) 200;
--Backer, Fl. Males. ser. 1, 4 (1951) 256. --Monochoria vaginalis var.
pauciflora (Blume) Merr., EPFP 1 (1922) 201. SE Asia to China, Japan and
throughout Malesia. Throughout the Philippines from the lowlands up to
2000m; common in periodically inundated or water-logged open waste
sites, rice paddies, swamps, etc. Photos
Acknowledgements
Ron Boos kindly provided some of the photos on this web page.
