On the big island of Hawaii, a private grower has been growing Nepenthes outdoors around his property for many years. The plants have been reproducing on their own, with hundreds of young plants, along with a few mature individuals, comprising a hybrid swarm. [[Christian James]] took me to visit this site in 2016.
Most of the "natural" hybrids showed features of N. maxima, sanguinea, veitchii, and ventricosa. The property owner also intentionally planted N. albomarginata, bicalcarata, and rafflesiana, but none of the self-produced hyrbrids resembled these latter four.
Here is one of the largest individuals found, a hybrid of unknown parentage growing epiphytically on a hapu'u tree ferm. Pitchers were at least 12" / 30 cm tall.
<a data-flickr-embed="true" href="https://www.flickr.com/photos/60359429@N08/24833731546/in/album-72157665194754013" title="Nepenthes hybrid"><img src="https://live.staticflickr.com/1573/24833731546_e3b9f1e7c4.jpg" width="225" height="400" alt="Nepenthes hybrid"/></a> <a data-flickr-embed="true" href="https://www.flickr.com/photos/60359429@N08/24564522810/in/album-72157665194754013" title="Nepenthes hybrid"><img src="https://live.staticflickr.com/1703/24564522810_7cf5debd9e_w.jpg" width="225" height="400" alt="Nepenthes hybrid"/></a> <a data-flickr-embed="true" href="https://www.flickr.com/photos/60359429@N08/24564517020/in/album-72157665194754013" title="Nepenthes hybrid"><img src="https://live.staticflickr.com/1579/24564517020_9fdd79ac4b_w.jpg" width="225" height="400" alt="Nepenthes hybrid"/></a>
Some logs were covered with seedlings and adolescent plants:
<a data-flickr-embed="true" href="https://www.flickr.com/photos/60359429@N08/24766553331/in/album-72157665194754013" title="Nepenthes hybrids"><img src="https://live.staticflickr.com/1455/24766553331_ee88933222_w.jpg" width="225" height="400" alt="Nepenthes hybrids"/></a> <a data-flickr-embed="true" href="https://www.flickr.com/photos/60359429@N08/24833736626/in/album-72157665194754013" title=""Wild" Nepenthes hybrids"><img src="https://live.staticflickr.com/1627/24833736626_4021a08ac8_w.jpg" width="400" height="225" alt=""Wild" Nepenthes hybrids"/></a>
while others grew in random open patches of ground
<a data-flickr-embed="true" href="https://www.flickr.com/photos/60359429@N08/24492407859/in/album-72157665194754013" title="Nepenthes hybrid swarm"><img src="https://live.staticflickr.com/1496/24492407859_b293273f0b.jpg" width="500" height="281" alt="Nepenthes hybrid swarm"/></a>
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[[Nepenthes]]