Search results for #hydrochory
Dolichandrone spathacea (#Bignoniaceae) is a mangrove tree from SE Asia & Australia. Unlike most members of the family, which have wind-dispersed, winged seeds, it has chunky, corky seeds that float. #hydrochory #dispersal 📷 1: Capsules & seeds. 📷 2: The seeds.
Swartzia polyphylla (#Fabaceae) is a rainforest tree from floodplains in the Amazon Basin with large seeds that float when released. As in many legumes, buoyancy is provided by the airspace between the cotyledons in the seed. #hydrochory #dispersal 📷: Hervé Galliffet CCBYNC4
The coconut won't be viable, but the transport of living shells might have biogeographic consequences. What say the malacologists? #Arecaceae #malacology #shells #dispersal #hydrochory
The coconut won't be viable, but the transport of living shells might have biogeographic consequences. What say the malacologists? #Arecaceae #malacology #shells #dispersal #hydrochory
Trapa natans (#Lythraceae) is an annual water weed from Eurasia naturalized in the NE USA. The fruits have horns that are the hardened calyx lobes. The flowers are aerial, but fruits develop underwater & float when released at maturity. #hydrochory #dispersal
Coconut (Cocos nucifera; #Arecaceae) is a champion disperser. Its fruits can float for months & still sprout when stranded. Nevertheless, it achieved its pantropical distribution with help from humans, for whom this is a supremely useful crop. #hydrochory #dispersal
I have a bowl of seeds/fruits picked up from beaches in Florida & Asia. My carpological collection includes Manicaria saccifera (#Arecaceae), Heritiera littoralis (#Malvaceae), Barringtonia acutangula (#Lecythidaceae) & Sacoglottis amazonica (#Humiriaceae). #hydrochory #dispersal
Each nut of Hernandia sp. (#Hernandiaceae) is subtended by a white, cup-shaped bract. When the fruits drop, the bracts act like boats, ferrying the fruits away. Once in New Guinea, I waded through a shallow pool covered by rafts of tiny Hernandia boats. #dispersal #hydrochory
Mucuna, Entada [sounds like a song from The Lion King 🤣] species are common drift seeds carried from the Caribbean & C. & S. America to the shores of Florida by the Gulf Stream. Both are #Fabaceae & have long-lived seeds with internal air pockets. #dispersal #hydrochory
In Zona 2017 (see Alt Text), I described how Chamaedorea cataractarum (#Arecaceae) deploys endocarp fibers after soaking in water. The fiber hooks promote dispersal (by increasing drag) & retard dispersal (by fixing the endocarp to the substrate). #hydrochory #dispersal
This week, I’m banging on about hydrochory: dispersal by water. Heritiera littoralis (#Malvaceae) is a mangrove tree with water-dispersed fruits. You might imagine the ridge acts like a keel, but it’s more of a sail or a vane. #hydrochory #dispersal 📷: Douglas Goldman CCBY4
Does it count as #hydrochory though ? 😅
Does it count as #hydrochory though ? 😅
When the lake comes pre-seeded for surface PIV. #hydrochory
Families with various modes of #seed #dispersal: #Sapindaceae, part 2. Drupe = #endozoochory Litchi chinensis Dehiscent pod, nonrewarding = #endozoochory Majidea zanguebarica 📷:Forest & Kim Starr Drupe = #hydrochory Sapindus sapinaria 📷: David Eickhoff What have I missed?
#Surianaceae (#Fabales) are mostly Australian, but Suriana maritima is a pantropical, littoral shrub. It has long shoots and short shoots. Leaves are slightly succulent & mucilaginous with stomata on both surfaces. Fruits are ocean dispersed. #hydrochory 🌊🌊🌊
#Crinum has large seeds comprised mostly of endosperm surrounded by a thin corky layer. They are adapted to water #dispersal (#hydrochory), either by rivers and streams or ocean currents. This is C. asiaticum from Asia & Pacific coastlines.
What disperses the seeds of Aesculus californica (#Sapindaceae)? The fruits dehisce and drop the seeds. Do the seeds float (#hydrochory)? Or are they carried off by animals (#synzoochory)?
The black fruits of Hernandia sonora (#Hernandiaceae) are almost enveloped by white, cupular bracts, which act like little boats. These fruits set sail on tropical waters in Mexico and the Caribbean. #Hydrochory #Tropicalbotany
Chamaedorea cataractarum, a rheophytic palm (#Arecaceae), has seeds that, after being in water for a few hours, deploy fibers that allow the seeds to hook onto the shoreline & establish. I published the research 3yrs ago. #Hydrochory #tropicalbotany ow.ly/U4oI50yB4g6
